WO2023221686A1 - Positioning method and related apparatus - Google Patents

Abstract

The present application relates to the technical field of communications. Disclosed in the present application are a positioning method and a related apparatus. The method comprises: a terminal device sends a first positioning request to a first network device, the first positioning request comprising a first sounding reference signal (SRS) configuration, and the first positioning request being used for requesting reservation of a first SRS resource corresponding to the first SRS configuration; and the terminal device sends a first SRS according to the first SRS resource corresponding to the first SRS configuration, the first SRS being used for positioning. In the present method, the required SRS configuration is sent to the first network device by means of the positioning request so as to request reservation of the first SRS resource corresponding to the first SRS configuration, thus saving signaling overheads required for issuing an SRS configuration; in addition, the first network device does not need to issue an SRS configuration to the terminal device every time positioning is performed, thus improving the positioning efficiency.

Description

A positioning method and related device

This application claims priority to the Chinese patent application filed with the China Patent Office on May 17, 2022, with the application number 202210536954.9 and the application title "A positioning method and related devices", the entire content of which is incorporated into this application by reference. .

Technical field

The present application relates to the field of communication technology, and in particular, to a positioning method and related devices.

Background technique

Generally, when performing uplink positioning of a terminal device, the base station needs to deliver the configured sounding reference signal (SRS) configuration to the terminal device through proprietary signaling, so that the terminal device sends SRS according to the received SRS configuration. , thereby achieving uplink positioning of the terminal equipment by measuring SRS.

However, in the above method of uplink positioning of terminal equipment, the signaling overhead required to deliver SRS configuration is proportional to the number of terminal devices that need to be positioned. The signaling overhead is large, and each positioning needs to be downloaded to the terminal device. If the SRS configuration is sent, the positioning efficiency is low.

Contents of the invention

Embodiments of the present application provide a positioning method and related devices, which can reduce signaling overhead and improve positioning efficiency.

In a first aspect, embodiments of the present application provide a positioning method, which method includes:

The terminal device sends a first positioning request to the first network device. The first positioning request includes a first sounding reference signal SRS configuration. The first positioning request is used to request to reserve a first SRS corresponding to the first SRS configuration. resource;

The terminal device sends the first SRS according to the first SRS resource corresponding to the first SRS configuration, and the first SRS is used for positioning.

In the embodiment of the present application, a positioning method is provided. The first positioning request sent by the terminal device to the first network device includes the first SRS configuration and requests to reserve the first SRS resource corresponding to the first SRS configuration, so that the first SRS resource corresponding to the first SRS configuration can be reserved. The first SRS is sent according to the first SRS resource corresponding to the first SRS configuration, for measuring and obtaining the positioning information of the terminal device. In the current positioning method, the first network device needs to deliver the configured SRS configuration to the terminal device through proprietary signaling. The signaling overhead is large, and each positioning needs to deliver the SRS configuration to the terminal device, and the positioning efficiency is relatively low. Low. In the embodiment of this application, the terminal device sends the required SRS configuration to the first network device through a positioning request to request to reserve the first SRS resource corresponding to the first SRS configuration, which can save the signaling required for issuing the SRS configuration. Overhead, and there is no need to deliver SRS configuration to the terminal device every time it is positioned, which improves positioning efficiency. In addition, in the current positioning method, the terminal device in the inactive state needs to support the small data transmission SDT capability and send an event report (event report) to the first network device to request positioning of the terminal device. In the embodiment of the present application, the terminal device sends a first positioning request to request to reserve the first SRS resource corresponding to the first SRS configuration. There is no need to send an event report to the first network device through SDT, so there is no need to request Terminal equipment must support SDT capabilities, which reduces the complexity of the terminal equipment, simplifies the positioning process, and improves positioning efficiency.

In a possible implementation, the method further includes:

The terminal device obtains the corresponding relationship between the cell identifier and the SRS configuration;

The terminal device determines the first SRS configuration according to the first cell identifier and the corresponding relationship. The first SRS The configuration includes the SRS configuration corresponding to the first cell identifier.

In the embodiment of this application, a possible specific implementation method for determining the first SRS configuration is provided. Specifically, the terminal device can obtain the cell identity and SRS configuration through broadcast messages, multicast messages, offline downloads, and other methods. Correspondence relationship, and according to the correspondence relationship between the cell identifier and the SRS configuration, determine the first SRS configuration corresponding to the first cell identifier. Through the embodiments of this application, the terminal device determines the corresponding SRS configuration according to the cell identifier. There is no need for the first network device to deliver the configured SRS configuration to the terminal device through dedicated signaling, which can save the signaling required to deliver the SRS configuration. Overhead, and there is no need to deliver SRS configuration to the terminal device every time it is positioned, which improves positioning efficiency.

In a possible implementation, the first cell identity includes a cell identity in the same public land mobile network as the terminal device.

In the embodiment of the present application, a possible specific implementation method of obtaining the first cell identity is provided. Specifically, the first cell identity includes a cell identity that is in the same public land mobile network as the terminal device. Specifically, it may be a physical cell identity. PCI, PCI is the cell identity carried in the reference signal sent by the base station in the cell. It can also be other cell identities, such as the new air interface cell global identifier NCGI, etc.

In a possible implementation, the first positioning request further includes a short medium access control integrity verification value shortMAC-I, an inactive wireless network temporary identity I-RNTI, and the first cell identity.

In the embodiment of the present application, a possible specific implementation method of obtaining the first positioning request is provided. Specifically, the first positioning request also includes a short media access control integrity verification value shortMAC-I. Inactive wireless The network temporary identifier I-RNTI, and the first cell identifier, where shortMAC-I is used for authentication, and I-RNTI is used to identify the SRS configuration stored on the network side. The function of the first cell identifier is related to the first SRS configuration. Similarly, it is used to request to reserve the corresponding first SRS resource, so that the first SRS can be sent according to the first SRS resource.

In a possible implementation, the first positioning request is carried in any one of the following messages: a radio resource control RRC message or a media access control layer control element MAC CE.

In the embodiment of this application, a possible specific implementation manner of sending the first positioning request is provided. Specifically, the first network device can be sent to the first network device through a radio resource control RRC message, a media access control layer control element MAC CE and other messages. Send a first positioning request, where the RRC message may be a common control channel CCCH message or a dedicated control channel DCCH message, or the like. In the embodiment of this application, the first positioning request is sent to the first network device through an RRC message or MAC CE to request to reserve the first SRS resource corresponding to the first SRS configuration. There is no need to send the first positioning request to the first network device through SDT. Event report (event report) eliminates the need for terminal equipment to support SDT capabilities, reduces the complexity of terminal equipment, simplifies the positioning process, and improves positioning efficiency.

In a possible implementation, sending the first SRS according to the first SRS resource corresponding to the first SRS configuration includes:

When the terminal device receives the first positioning request reply sent by the first network device, it sends the first SRS according to the first SRS resource, and the first positioning request reply is used to indicate to the terminal device Send the first SRS.

In the embodiment of the present application, a possible specific implementation manner of sending the first SRS is provided. Specifically, when the terminal device receives the first positioning request reply sent by the first network device, the first positioning request The reply indicates that the first network device satisfies the positioning request of the terminal device, so that the terminal device sends the first SRS according to the first SRS resource for measuring the first SRS to obtain the positioning information of the terminal device. Through the embodiments of this application, there is no need for the first network device to deliver the configured SRS configuration to the terminal device through dedicated signaling. When the terminal device receives the first positioning request reply, it can request the reserved first SRS Resource sends the first SRS, saving signaling overhead required for delivering SRS configuration.

In a possible implementation, the first positioning request reply includes one or more of the following: the first SRS resources, the first SRS configuration, and the first cell identity.

In the embodiment of the present application, a possible specific implementation manner of obtaining the first positioning request reply is provided. Specifically, the first positioning request reply includes one of the first SRS resource, the first SRS configuration, and the first cell identifier. One or more items have similar functions and are used to respond to the first positioning request, reserve the first SRS resource for the terminal device, and instruct the terminal device to send the first SRS according to the first SRS resource. Through the embodiments of this application, there is no need for the first network device to deliver the configured SRS configuration to the terminal device through dedicated signaling, and to send the first positioning request reply to the terminal device. The terminal device can be instructed to follow the first SRS reserved for it. The resource sends the first SRS, which saves the signaling overhead required for delivering SRS configuration.

In a possible implementation, the first positioning request reply further includes a first delay, and the first delay is used to instruct the terminal device to receive the first positioning request reply and send the first positioning request reply. The time interval between SRS.

In the embodiment of the present application, a possible specific implementation method of obtaining the first positioning request reply is provided. Specifically, the first positioning request reply also includes a first delay. When the first network device cannot satisfy the positioning of the terminal device, In the case of a request, it is used to instruct the terminal device to send the first SRS according to the first SRS resource reserved for the terminal device after receiving the first delay time of the reply to the first positioning request. Through the embodiments of the present application, when the first network device cannot satisfy the positioning request of the terminal device, the first delay can be used to avoid the problem that the terminal device may repeatedly initiate positioning requests multiple times, save signaling overhead, and simplify It simplifies the positioning process and improves positioning efficiency.

In a possible implementation, the first positioning request reply is carried in any one of the following messages: the second message Msg2, the second message Msg2 in the process of the terminal device randomly accessing the first network device through four steps. The fourth message Msg4 in the process of the terminal device randomly accessing the first network device in four steps, and the second message MsgB in the process of the terminal device randomly accessing the first network device in two steps.

In the embodiment of this application, a possible implementation method of receiving a first positioning request reply is provided. Specifically, the second message Msg2 and the four-step random access process in the four-step random access process of the first network device can be used. The fourth message Msg4 in the process of the first network device, the second message MsgB in the process of two-step random access to the first network device and other messages receive the first positioning request reply sent by the first network device. In the embodiment of the present application, the first positioning request reply sent by the first network device is received through the random access message, and the first SRS is sent according to the first SRS resource reserved by the request, without the need for the first network device to send the first positioning request through dedicated signaling. The configured SRS configuration is delivered to the terminal device, which can save the signaling overhead required to deliver the SRS configuration.

In a second aspect, embodiments of the present application provide a positioning method, which method includes:

The first network device receives a first positioning request sent by the terminal device. The first positioning request includes a first sounding reference signal SRS configuration. The first positioning request is used to request to reserve the first positioning request corresponding to the first SRS configuration. SRS resources;

The first network device measures the first SRS sent by the terminal device according to the first SRS resource corresponding to the first SRS configuration to obtain positioning measurement information of the terminal device.

In the embodiment of the present application, a positioning method is provided. The first network device receives the first positioning request sent by the terminal device and includes the first SRS configuration, and requests the first network device to reserve the first SRS corresponding to the first SRS configuration. resources, so that the terminal device can send the first SRS according to the first SRS resource corresponding to the first SRS configuration, and the first network device can measure the first SRS sent by the terminal device to obtain the positioning information of the terminal device. In the current positioning method, the first network device needs to deliver the configured SRS configuration to the terminal device through proprietary signaling. The signaling overhead is large, and each positioning needs to deliver the SRS configuration to the terminal device, and the positioning efficiency is relatively low. Low. In the embodiment of the present application, the first network device reserves the first SRS resource corresponding to the first SRS configuration for the terminal device by receiving the first positioning request including the first SRS configuration, thereby saving the signaling required to deliver the SRS configuration. Overhead, and there is no need to deliver SRS configuration to the terminal device every time it is positioned, which improves positioning efficiency. In addition, in the current positioning method, the terminal device in the inactive state needs to support the small data transmission SDT capability and send an event report to the first network device to request positioning of the terminal device. This application In this embodiment, the first network device reserves the first SRS resource corresponding to the first SRS configuration for the terminal device by receiving the first positioning request including the first SRS configuration sent by the terminal device, without the need for the terminal device to send a request to the third SRS configuration through SDT. A network device sends an event report, thereby eliminating the need for the terminal device to support SDT capabilities, reducing the complexity of the terminal device, simplifying the positioning process, and improving positioning efficiency.

In a possible implementation, the method further includes:

The first network device sends a corresponding relationship between a cell identifier and an SRS configuration to the terminal device. The corresponding relationship is used to determine the first SRS configuration. The first SRS configuration includes an SRS configuration corresponding to the first cell identifier. .

In the embodiment of the present application, a possible specific implementation manner for determining the first SRS configuration is provided. Specifically, the first network device can send the correspondence between the cell identifier and the SRS configuration through broadcast messages, multicast messages, etc. relationship, so that the terminal device can determine the first SRS configuration corresponding to the first cell identifier according to the received correspondence relationship between the cell identifier and the SRS configuration. Through the embodiments of this application, the first network device sends the corresponding relationship between the cell identifier and the SRS configuration, and the terminal device determines the SRS configuration corresponding to the cell identifier based on the corresponding relationship. There is no need for the first network device to configure the configured SRS through proprietary signaling. Delivering it to the terminal device can save the signaling overhead required to deliver the SRS configuration, and there is no need to deliver the SRS configuration to the terminal device every time it is positioned, which improves positioning efficiency.

In a possible implementation, the first cell identity includes a cell identity in the same public land mobile network as the terminal device.

In the embodiment of the present application, a possible specific implementation method of obtaining the first cell identity is provided. Specifically, the first cell identity includes a cell identity that is in the same public land mobile network as the terminal device. Specifically, it may be a physical cell identity. PCI, PCI is the cell identity carried in the reference signal sent by the base station in the cell. It can also be other cell identities, such as the new air interface cell global identifier NCGI, etc.

In a possible implementation, the first positioning request further includes a short medium access control integrity verification value shortMAC-I, an inactive wireless network temporary identity I-RNTI, and the first cell identity.

In the embodiment of the present application, a possible specific implementation method of obtaining the first positioning request is provided. Specifically, the first positioning request also includes a short media access control integrity verification value shortMAC-I. Inactive wireless The network temporary identifier I-RNTI, and the first cell identifier, where shortMAC-I is used for authentication, and I-RNTI is used to identify the SRS configuration stored on the network side. The function of the first cell identifier is related to the first SRS configuration. Similarly, it is used to request to reserve the corresponding first SRS resource, so that the first SRS can be sent according to the first SRS resource.

In a possible implementation, the first positioning request is carried in any one of the following messages: a radio resource control RRC message or a media access control layer control element MAC CE.

In the embodiment of this application, a possible specific implementation manner of sending the first positioning request is provided. Specifically, the first network device can be sent to the first network device through a radio resource control RRC message, a media access control layer control element MAC CE and other messages. Send a first positioning request, where the RRC message may be a common control channel CCCH message or a dedicated control channel DCCH message, or the like. In the embodiment of this application, the first positioning request is sent to the first network device through an RRC message or MAC CE to request to reserve the first SRS resource corresponding to the first SRS configuration. There is no need to send the first positioning request to the first network device through SDT. Event report (event report) eliminates the need for terminal equipment to support SDT capabilities, reduces the complexity of terminal equipment, simplifies the positioning process, and improves positioning efficiency.

In a possible implementation, before measuring the first SRS sent by the terminal device according to the first SRS resource corresponding to the first SRS configuration, the method further includes:

The first network device sends a first positioning request reply to the terminal device, where the first positioning request reply is used to instruct the terminal device to send the first SRS.

In the embodiment of this application, a possible specific implementation manner of sending a first positioning request reply is provided, specifically, After receiving the first positioning request sent by the terminal device, the first network device sends a first positioning request reply to the terminal device. The first positioning request reply instructs the first network device to satisfy the positioning request of the terminal device, so that the terminal device responds according to the first positioning request. An SRS resource sends a first SRS, and the first network device measures the first SRS to obtain positioning information of the terminal device. Through the embodiments of this application, there is no need for the first network device to deliver the configured SRS configuration to the terminal device through dedicated signaling. When the terminal device receives the first positioning request reply, it can request the reserved first SRS Resource sends the first SRS, saving signaling overhead required for delivering SRS configuration.

In a possible implementation, the first positioning request reply includes one or more of the following: the first SRS resource, the first SRS configuration, and the first cell identity.

In the embodiment of the present application, a possible specific implementation manner of sending a first positioning request reply is provided. Specifically, the first positioning request reply includes one of the first SRS resource, the first SRS configuration, and the first cell identifier. One or more items have similar functions and are used to respond to the first positioning request, reserve the first SRS resource for the terminal device, and instruct the terminal device to send the first SRS according to the first SRS resource. Through the embodiments of this application, there is no need for the first network device to deliver the configured SRS configuration to the terminal device through dedicated signaling, and to send the first positioning request reply to the terminal device. The terminal device can be instructed to follow the first SRS reserved for it. The resource sends the first SRS, which saves the signaling overhead required for delivering SRS configuration.

In a possible implementation, the first positioning request reply further includes a first delay, and the first delay is used to instruct the terminal device to receive the first positioning request reply and send the first positioning request reply. The time interval between SRS.

In the embodiment of the present application, a possible specific implementation manner of sending a first positioning request reply is provided. Specifically, the first positioning request reply also includes a first delay. When the first network device cannot satisfy the positioning of the terminal device, In the case of a request, it is used to instruct the terminal device to send the first SRS according to the first SRS resource reserved for the terminal device after receiving the first delay time of the reply to the first positioning request. Through the embodiments of the present application, when the first network device cannot satisfy the positioning request of the terminal device, the first delay can be used to avoid the problem that the terminal device may repeatedly initiate positioning requests multiple times, save signaling overhead, and simplify It simplifies the positioning process and improves positioning efficiency.

In a possible implementation, the first positioning request reply is carried in any one of the following messages: the second message Msg2, the second message Msg2 in the process of the terminal device randomly accessing the first network device through four steps. The fourth message Msg4 in the process of the terminal device randomly accessing the first network device in four steps, and the second message MsgB in the process of the terminal device randomly accessing the first network device in two steps.

In the embodiment of this application, a possible implementation manner of sending a first positioning request reply is provided. Specifically, the first network device can randomly access the first network device through the second message Msg2 and the fourth message in four steps. The fourth message Msg4 in the process of random access to the first network device in one step, the second message MsgB in the process of random access to the first network device in two steps and other messages are used to send the first positioning request reply to the terminal device. In this embodiment of the present application, the first network device sends a first positioning request reply to the terminal device through a random access message, so that the terminal device can send the first SRS according to the first SRS resource reserved for it without the first network device. Delivering the configured SRS configuration to the terminal device through dedicated signaling can save the signaling overhead required to deliver the SRS configuration.

In a possible implementation, after receiving the first positioning request sent by the terminal device, the method further includes:

The first network device sends a first message to the second network device, the first message is used to request context information of the terminal device and request the second network device to stop reserving SRS resources for the terminal device. .

In the embodiment of this application, a possible specific implementation of cell reselection is provided. Specifically, after the terminal device meets the cell reselection conditions, it reselects from the second network device to the first network device. After the device receives the first positioning request sent by the terminal device, the first network device sends a first message to the second network device for requesting context information of the terminal device and requesting the second network device to stop reserving SRS resources for the terminal device. Through the embodiment of this application, in developing In the case of cell reselection, the first network device sends a first message to the second network device, requesting to obtain the context information of the terminal device, which can ensure the continuity and stability of the positioning service in the case of cell reselection, and requests the second network device to obtain the context information of the terminal device. Network equipment stops reserving SRS resources for terminal equipment, which can achieve effective utilization of resources and improve resource utilization.

In a possible implementation, after receiving the first positioning request sent by the terminal device, the method further includes:

The first network device sends a second positioning request to the third network device, where the second positioning request is used to request positioning of the terminal device.

In the embodiment of the present application, a possible specific implementation manner of sending a second positioning request is provided. Specifically, after the first network device receives the first positioning request sent by the terminal device, it sends the second positioning request to the third network device. Positioning request, used to request positioning of the terminal device. Through the embodiments of this application, the first network device initiates a second positioning request to the third network device to request positioning of the terminal device. There is no need for the terminal device to initiate a positioning request through SDT, so there is no need to require the terminal device to support SDT capabilities. The complexity of the terminal equipment is reduced, the positioning process is simplified, and the positioning efficiency is improved.

In a possible implementation, the second positioning request includes first identification information, second identification information, and one or more of the following: location information of the terminal device, cell identification of the terminal device, the first cell identifier and the first SRS configuration;

Wherein, the first identification information includes the next generation interface application protocol identification between the terminal device and the third network device, and the second identification information includes the next generation interface application protocol identification between the terminal device and the first network device. The next generation interface application protocol identifier.

In the embodiment of the present application, a possible specific implementation manner of obtaining the second positioning request is provided. Specifically, the second positioning request includes the next generation interface application protocol identifier (first generation interface application protocol identifier) between the terminal device and the third network device. identification information), the next generation interface application protocol identification (second identification information) between the terminal equipment and the first network equipment, as well as the location information of the terminal equipment, the cell identification of the terminal equipment, the first cell identification, and the first SRS configuration one or more pieces of information. Through the second positioning request in the embodiment of the present application, it is used to request positioning of the terminal device. There is no need for the terminal device to initiate a positioning request through SDT, so there is no need to require the terminal device to support SDT capabilities, which reduces the complexity of the terminal device, and The positioning process is simplified and positioning efficiency is improved.

In a possible implementation, the second positioning request is carried in a Next Generation Interface Application Protocol NG-AP message.

In the embodiment of the present application, a possible specific implementation manner of sending a second positioning request is provided. Specifically, the second positioning request can be sent to a third network device through a Next Generation Interface Application Protocol NG-AP message. Through the NG-AP message in the embodiment of the present application, the first network device is supported to trigger the second positioning request and request positioning of the terminal device, thereby eliminating the need for the terminal device to initiate a positioning request through SDT, and thereby eliminating the need for the terminal device to support SDT capabilities. , reducing the complexity of the terminal equipment, simplifying the positioning process, and improving positioning efficiency.

In a possible implementation, after sending the second positioning request to the third network device, the method further includes:

The first network device receives a second positioning request reply from the third network device, and the second positioning request reply is used to indicate positioning of the terminal device.

In the embodiment of the present application, a possible specific implementation manner of receiving a second positioning request reply is provided. Specifically, after the first network device sends the second positioning request to the third network device, it receives the second positioning request from the third network device. The second positioning request reply indicates positioning of the terminal device. The second positioning request reply may be sent by the third network device to the first network device, or may be sent by the third network device to the fourth network device via the fourth network. The device forwards it to the first network device. Through the embodiment of the present application, the first network device can position the terminal device according to the received second positioning request reply. Bit.

In a third aspect, embodiments of the present application provide a positioning method, which method includes:

The second network device receives the first message sent by the first network device, where the first message is used to request context information of the terminal device and request the second network device to stop reserving SRS resources for the terminal device;

The second network device sends a second message to the first network device, where the second message includes context information of the terminal device.

In the embodiment of the present application, a positioning method is provided. After the terminal device meets the cell reselection conditions, it reselects from the second network device to the first network device. After the first network device receives the first positioning request sent by the terminal device, , the first network device sends a first message to the second network device. Correspondingly, the second network device receives the first message sent by the first network device. The first message is used to request context information of the terminal device, and to request the second The network device stops reserving SRS resources for the terminal device, and the second network device sends a second message to the first network device, where the second message includes context information of the terminal device. Through the embodiment of the present application, when cell reselection occurs, the second network device sends a second message to the first network device after receiving the first message sent by the first network device. The second message includes the context of the terminal device. Information can ensure the continuity and stability of the positioning service in the case of cell reselection, and the second network device stops reserving SRS resources for the terminal device, which can achieve effective utilization of resources and improve resource utilization.

In a possible implementation, the method further includes:

The second network device sends a third message to the fourth network device, where the third message is used to instruct to stop reserving SRS resources for the terminal device;

The second network device receives a fourth message sent by the fourth network device, where the fourth message is used to instruct to stop measuring the SRS sent by the terminal device.

In the embodiment of this application, a possible specific implementation of a positioning method is provided. Specifically, after the terminal device meets the cell reselection conditions, it reselects from the second network device to the first network device. The second network device Stop reserving SRS resources for the terminal device. The second network device sends a third message to the fourth network device to inform the fourth network device that the second network device has stopped reserving SRS resources for the terminal device. The second network device receives The fourth message sent by the fourth network device is to stop measuring the SRS sent by the terminal device. Through the embodiments of this application, when cell reselection occurs, the second network device can promptly stop reserving SRS resources for the terminal device and stop measuring the SRS sent by the terminal device, which can achieve effective utilization of resources and improve resource utilization. .

In the fourth aspect, embodiments of the present application provide a positioning method, which method includes:

The third network device receives the second positioning request sent by the first network device, where the second positioning request is used to request positioning of the terminal device;

The third network device sends a third positioning request to the fourth network device, the third positioning request includes a first sounding reference signal SRS configuration, and the third positioning request is used to request reservation of the first SRS configuration corresponding The first SRS resource, the first SRS configuration includes the SRS configuration corresponding to the first cell identity.

In a possible implementation, the second positioning request includes first identification information, second identification information, and one or more of the following: location information of the terminal device, cell identification of the terminal device, the first cell identifier and the first SRS configuration;

Wherein, the first identification information includes the next generation interface application protocol identification between the terminal device and the third network device, and the second identification information includes the next generation interface application protocol identification between the terminal device and the first network device. The next generation interface application protocol identifier.

In a possible implementation, the second positioning request is carried in a Next Generation Interface Application Protocol NG-AP message.

In a possible implementation, the method further includes:

The third device sends a second positioning request reply to the first network device, where the second positioning request reply is used to instruct the terminal device to be positioned.

In a fifth aspect, embodiments of the present application provide a positioning method, which method includes:

The fourth network device receives a third positioning request sent by the third network device, the third positioning request includes a first sounding reference signal SRS configuration, and the third positioning request is used to request to reserve the SRS configuration corresponding to the first SRS configuration. The first SRS resource, the first SRS configuration includes the SRS configuration corresponding to the first cell identity;

The fourth network device sends a third positioning request reply to the third network device, where the third positioning request reply is used to indicate the first SRS resource.

In a possible implementation, the method further includes:

The fourth network device receives a third message sent by the second network device, where the third message is used to instruct to stop reserving SRS resources for the terminal device;

The fourth network device sends a fourth message to the second network device, where the fourth message is used to instruct to stop measuring the SRS sent by the terminal device.

In a sixth aspect, embodiments of the present application provide a communication device, which includes a module or unit for executing the method described in any one of the first to fifth aspects.

In a possible design, the communication device includes:

A transceiver unit configured to send a first positioning request to the first network device, where the first positioning request includes a first sounding reference signal SRS configuration, and the first positioning request is used to request to reserve the SRS configuration corresponding to the first SRS configuration. First SRS resources;

A processing unit configured to configure the corresponding first SRS resource according to the first SRS, and send the first SRS through the transceiver unit, where the first SRS is used for positioning.

In a possible implementation, the transceiver unit is also used to obtain the corresponding relationship between the cell identifier and the SRS configuration;

The processing unit is further configured to determine the first SRS configuration according to the first cell identifier and the corresponding relationship, where the first SRS configuration includes the SRS configuration corresponding to the first cell identifier.

In a possible implementation, the first cell identity includes a cell identity in the same public land mobile network as the communication device.

In a possible implementation, the first positioning request further includes a short medium access control integrity verification value shortMAC-I, an inactive wireless network temporary identity I-RNTI, and the first cell identity.

In a possible implementation, the first positioning request is carried in any one of the following messages: a radio resource control RRC message or a media access control layer control element MAC CE.

In a possible implementation, the processing unit is further configured to, upon receiving a first positioning request reply sent by the first network device, send the location request through the transceiver unit according to the first SRS resource. The first SRS, the first positioning request reply is used to instruct the communication device to send the first SRS.

In a possible implementation, the first positioning request reply includes one or more of the following: the first SRS resource, the first SRS configuration, and the first cell identity.

In a possible implementation, the first positioning request reply further includes a first delay, and the first delay is used to instruct the communication device to receive the first positioning request reply and send the first positioning request reply. The time interval between SRS.

In a possible implementation, the first positioning request reply is carried in any one of the following messages: the communication The second message Msg2 in the process of the communication device randomly accessing the first network device through four steps, the fourth message Msg4 in the process of the communication device randomly accessing the first network device through four steps, the communication device The second message MsgB is sent in a two-step random access process to the first network device.

In another possible design, the communication device includes:

A transceiver unit configured to receive a first positioning request sent by the terminal device, where the first positioning request includes a first sounding reference signal SRS configuration, and the first positioning request is used to request reservation of the first positioning request corresponding to the first SRS configuration. 1. SRS resources;

A processing unit configured to measure the first SRS sent by the terminal device according to the first SRS resource corresponding to the first SRS configuration to obtain positioning measurement information of the terminal device.

In a possible implementation, the transceiver unit is further configured to send a correspondence between a cell identifier and an SRS configuration to the terminal device, where the correspondence is used to determine the first SRS configuration. The SRS configuration includes the SRS configuration corresponding to the first cell identifier.

In a possible implementation, the first cell identity includes a cell identity in the same public land mobile network as the terminal device.

In a possible implementation, the first positioning request further includes a short medium access control integrity verification value shortMAC-I, an inactive wireless network temporary identity I-RNTI, and the first cell identity.

In a possible implementation, the first positioning request is carried in any one of the following messages: a radio resource control RRC message or a media access control layer control element MAC CE.

In a possible implementation, the transceiver unit is further configured to send a first positioning request reply to the terminal device, where the first positioning request reply is used to instruct the terminal device to send the first SRS.

In a possible implementation, the first positioning request reply includes one or more of the following: the first SRS resource, the first SRS configuration, and the first cell identity.

In a possible implementation, the first positioning request reply further includes a first delay, and the first delay is used to instruct the terminal device to receive the first positioning request reply and send the first positioning request reply. The time interval between SRS.

In a possible implementation, the first positioning request reply is carried in any one of the following messages: the second message Msg2 in the process of the terminal device randomly accessing the communication device through four steps; The fourth message Msg4 in the process of the device randomly accessing the communication device through four steps, and the second message MsgB in the process of the terminal device randomly accessing the communication device in two steps.

In a possible implementation, the transceiver unit is further configured to send a first message to a second network device, where the first message is used to request context information of the terminal device and to request the second network device. The device stops reserving SRS resources for the terminal device.

In a possible implementation, the transceiver unit is further configured to send a second positioning request to a third network device, where the second positioning request is used to request positioning of the terminal device.

In a possible implementation, the second positioning request includes first identification information, second identification information, and one or more of the following: location information of the terminal device, cell identification of the terminal device, the first cell identifier and the first SRS configuration;

Wherein, the first identification information includes the next generation interface application protocol identification between the terminal equipment and the third network equipment, and the second identification information includes the next generation interface application protocol identification between the terminal equipment and the communication device. Generation interface application protocol identifier.

In a possible implementation, the second positioning request is carried in a Next Generation Interface Application Protocol NG-AP message.

In a possible implementation, the transceiver unit is further configured to receive a second positioning request reply from the third network device, where the second positioning request reply is used to indicate positioning of the terminal device.

In another possible design, the communication device includes:

A transceiver unit configured to receive a first message sent by a first network device, where the first message is used to request context information of a terminal device and request the communication device to stop reserving SRS resources for the terminal device;

The transceiver unit is also configured to send a second message to the first network device, where the second message includes context information of the terminal device.

In a possible implementation, the transceiver unit is further configured to send a third message to a fourth network device, where the third message is used to instruct to stop reserving SRS resources for the terminal device;

The transceiver unit is further configured to receive a fourth message sent by the fourth network device, where the fourth message is used to instruct to stop measuring the SRS sent by the terminal device.

In another possible design, the communication device includes:

A transceiver unit configured to receive a second positioning request sent by the first network device, where the second positioning request is used to request positioning of the terminal device;

The transceiver unit is configured to send a third positioning request to a fourth network device, where the third positioning request includes a first sounding reference signal SRS configuration, and the third positioning request is used to request reservation of the first SRS configuration. The corresponding first SRS resource, the first SRS configuration includes the SRS configuration corresponding to the first cell identity.

In a possible implementation, the second positioning request includes first identification information, second identification information, and one or more of the following: location information of the terminal device, cell identification of the terminal device, the first cell identifier and the first SRS configuration;

Wherein, the first identification information includes the next generation interface application protocol identification between the terminal equipment and the communication device, and the second identification information includes the next generation interface application protocol identification between the terminal equipment and the first network equipment. Generation interface application protocol identifier.

In a possible implementation, the second positioning request is carried in a Next Generation Interface Application Protocol NG-AP message.

In a possible implementation, the transceiver unit is further configured to send a second positioning request reply to the first network device, where the second positioning request reply is used to instruct positioning of the terminal device.

In another possible design, the communication device includes:

A transceiver unit configured to receive a third positioning request sent by a third network device, where the third positioning request includes a first sounding reference signal SRS configuration, and the third positioning request is used to request reservation of the first SRS configuration corresponding The first SRS resource, the first SRS configuration includes the SRS configuration corresponding to the first cell identity;

The transceiver unit is further configured to send a third positioning request reply to the third network device, where the third positioning request reply is used to indicate the first SRS resource.

In a possible implementation, the transceiver unit is further configured to receive a third message sent by the second network device, where the third message is used to instruct to stop reserving SRS resources for the terminal device;

The transceiver unit is further configured to send a fourth message to the second network device, where the fourth message is used to instruct to stop measuring the SRS sent by the terminal device.

Regarding the technical effects brought by the sixth aspect and any possible implementation, reference may be made to the introduction corresponding to the technical effects of any one of the first to fifth aspects and the corresponding implementation.

In a seventh aspect, an embodiment of the present application provides a communication device, including a processor. The processor is coupled to a memory and may be used to execute instructions in the memory to implement any one of the above first to fifth aspects and the method of any possible implementation. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

In an eighth aspect, embodiments of the present application provide a communication device, including: a logic circuit and a communication interface. said communication The interface is used to receive information or send information; the logic circuit is used to receive information or send information through the communication interface, so that the communication device performs any one of the above first to fifth aspects and any possibility method of implementation.

In a ninth aspect, embodiments of the present application provide a computer-readable storage medium, the computer-readable storage medium being used to store a computer program (which may also be called a code, or an instruction); when the computer program is run on a computer When, the method of any one of the above-mentioned first to fifth aspects and any possible implementation is realized.

In a tenth aspect, embodiments of the present application provide a computer program product. The computer program product includes: a computer program (which may also be called a code, or an instruction); when the computer program is run, it causes the computer to execute the above-mentioned first step. The method of any one of the first aspect to the fifth aspect and any possible implementation.

In an eleventh aspect, embodiments of the present application provide a chip. The chip includes a processor. The processor is configured to execute instructions. When the processor executes the instructions, the chip performs the above first to fifth aspects. Methods of any aspect and any possible embodiment. Optionally, the chip also includes a communication interface, which is used to receive signals or send signals.

In a twelfth aspect, embodiments of the present application provide a communication system, which includes at least one communication device as described in the sixth aspect, or a communication device as described in the seventh aspect, or a communication device as described in the eighth aspect. device, or the chip according to the eleventh aspect.

In addition, in the process of executing the method described in any one of the above first to fifth aspects and any possible implementation manner, the process of sending information and/or receiving information in the above method can be understood as The process by which a processor outputs information, and/or the process by which a processor receives input information. When outputting information, the processor may output the information to the transceiver (or communication interface, or transmitting module) for transmission by the transceiver. After the information is output by the processor, it may also need to undergo other processing before it reaches the transceiver. Similarly, when the processor receives input information, the transceiver (or communication interface, or sending module) receives the information and inputs it into the processor. Furthermore, after the transceiver receives the information, the information may need to undergo other processing before being input to the processor.

Based on the above principles, for example, the sending information mentioned in the foregoing method can be understood as processor output information. For another example, receiving information can be understood as the processor receiving input information.

Optional, if there is no special explanation for the transmitting, sending and receiving operations involved in the processor, or if it does not conflict with its actual role or internal logic in the relevant description, it can be understood more generally as Processor output and receive, input and other operations.

Optionally, in the process of executing the method described in any one of the above first to fifth aspects and any possible implementation manner, the above processor may be a processor specially used to execute these methods, or may be A processor, such as a general-purpose processor, that performs these methods by executing computer instructions in memory. The above-mentioned memory can be a non-transitory memory, such as a read-only memory (ROM), which can be integrated on the same chip as the processor, or can be separately provided on different chips. This application The embodiment does not limit the type of memory and the arrangement of the memory and the processor.

In a possible implementation, the above-mentioned at least one memory is located outside the device.

In another possible implementation, the above-mentioned at least one memory is located within the device.

In yet another possible implementation, part of the at least one memory is located within the device, and another part of the memory is located outside the device.

In this application, the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together.

In this embodiment of the present application, the terminal device sends the required SRS configuration to the first network device through a positioning request to request Reserving the first SRS resource corresponding to the first SRS configuration can save the signaling overhead required to deliver the SRS configuration. Moreover, there is no need for the first network device to deliver the SRS configuration to the terminal device every time positioning is performed, which improves positioning. Efficiency, the terminal device no longer needs to send event reports to the first network device through SDT, thereby eliminating the need for the terminal device to support SDT capabilities, reducing the complexity of the terminal device, simplifying the positioning process, and improving positioning efficiency.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the drawings required to be used in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on these drawings without exerting creative efforts.

Figure 1 is a schematic diagram of a communication system provided by an embodiment of the present application;

Figure 2 is a schematic diagram of a positioning architecture based on a wireless communication system provided by an embodiment of the present application;

Figure 3 is a schematic diagram of terminal equipment state switching provided by an embodiment of the present application;

Figure 4 is a schematic diagram of the RRC connection recovery process of a terminal device provided by an embodiment of the present application;

Figure 5 is a schematic flow chart of a communication method provided by an embodiment of the present application;

Figure 6 is a schematic flowchart of a positioning-based communication method provided by an embodiment of the present application;

Figure 7 is a schematic flow chart of a positioning method provided by an embodiment of the present application;

Figure 8 is a schematic flow chart of another positioning method provided by an embodiment of the present application;

Figure 9 is a schematic flowchart of another positioning method provided by an embodiment of the present application;

Figure 10 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 11 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 12 is a schematic structural diagram of a chip provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

The terms "first" and "second" in the description, claims and drawings of this application are used to distinguish different objects, rather than describing a specific sequence. Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or equipment that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optional It also includes other steps or units inherent to these processes, methods, products or equipment.

Reference herein to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art can understand explicitly and implicitly that in the various embodiments of the present application, if there are no special instructions and logical conflicts, the terminology and/or descriptions between the various embodiments are consistent, and can By referencing each other, technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

It should be understood that in this application, "at least one (item)" refers to one or more, "plurality" refers to two or more, and "at least two (items)" refers to two or three and three or more, "and/or" is used to describe the relationship between associated objects, indicating that there can be three relationships. For example, "A and/or B" can mean: only A exists, only B exists, and A exists at the same time. and B, where A and B can be singular or plural. The character "/" generally indicates that the related object is a "or" relationship. “At least one of the following” or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items). For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c" ”, where a, b, c can be single or multiple.

The method provided by this application can be applied to various communication systems, for example, it can be an Internet of things (IoT) system, a narrowband Internet of things (NB-IoT) system, a long term evolution (long term evolution) , LTE) system, it can also be the fifth generation (5th-generation, 5G) communication system, and new communication systems (such as 6G) that will appear in future communication development.

The technical solution provided by this application can also be applied to machine type communication (MTC), long term evolution-machine (LTE-M), and device-to-device (D2D) networks. , machine to machine (M2M) network, Internet of things (IoT) network or other networks. Among them, the IoT network may include, for example, the Internet of Vehicles. Among them, the communication methods in the Internet of Vehicles system are collectively called vehicle-to-everything (V2X, X can represent anything). For example, the V2X can include: vehicle-to-vehicle (V2V) communication, Vehicle to infrastructure (V2I) communication, vehicle to pedestrian (V2P) communication, or vehicle to network (V2N) communication, etc. For example, in Figure 1 or Figure 2 shown below, the terminal equipment can communicate with each other through D2D technology, M2M technology or V2X technology.

Please refer to Figure 1. Figure 1 is a schematic diagram of a communication system provided by an embodiment of the present application.

As shown in Figure 1, the communication system may include at least one access network device and at least one terminal device.

The introduction to access network equipment and terminal equipment is as follows:

For example, the access network equipment may be the next generation node B (next generation node B, gNB), the next generation evolved base station (next generation evolved nodeB, ng-eNB), or the access network equipment in future 6G communications, etc. . The access network device can be any device with wireless transceiver functions, including but not limited to the base stations shown above. The base station may also be a base station in a future communication system such as a sixth generation communication system. Optionally, the access network device can be an access node, a wireless relay node, a wireless backhaul node, etc. in a wireless LAN (wireless fidelity, WiFi) system. Optionally, the access network device may be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario. Optionally, the access network device may be a wearable device or a vehicle-mounted device. Optionally, the access network device can also be a small station, a transmission reception point (TRP) (or it can also be called a transmission point), etc. It is understandable that the access network equipment can also be a base station in a future evolved public land mobile network (public land mobile network, PLMN), etc.

In some deployments, base stations (such as gNB) can be composed of centralized units (CU) and distributed units (DU). That is, the functions of the base station in the access network are split, some functions of the base station are deployed in a CU, and the remaining functions are deployed in a DU. And multiple DUs share one CU, which can save costs and facilitate network expansion. In other deployments of base stations, CU can also be divided into CU-control plane (CP) and CU-user plane (user plan, UP). In some deployments of base stations, the base stations may also be open radio access network (ORAN) architectures, etc. This application does not limit the specific type of base stations.

For ease of description, the following uses the access network device as a base station as an example to introduce the method involved in this application.

For example, the terminal equipment may also be called user equipment (UE), terminal, etc. Terminal equipment is a device with wireless transceiver functions that can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on water, such as on ships; it can also be deployed in the air, such as on On board an airplane, balloon or satellite, etc. The terminal device can be a mobile phone (mobile phone), tablet computer (Pad), computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, industrial control Wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, and transportation safety wireless terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc. It is understandable that the terminal equipment may also be a terminal equipment in a future 6G network or a terminal equipment in a future evolved PLMN, etc.

It can be understood that the terminal equipment shown in this application may not only include vehicles in the Internet of Vehicles (such as complete vehicles), but may also include vehicle-mounted equipment or vehicle-mounted terminals in the Internet of Vehicles, etc. This application will not apply to the terminal equipment when it is applied to the Internet of Vehicles. The specific form is not limited.

For the convenience of description, the following takes the terminal device as a UE as an example to introduce the method involved in this application.

The communication system shown in Figure 1 includes one base station and six UEs, such as UE1 to UE6 in Figure 1 . In this communication system, the base station can send downlink signals such as configuration information or downlink control information (DCI) to UE1 to UE6, and UE1 to UE6 can send SRS or physical uplink shared channel (PUSCH) to the base station. Wait for the up signal. It can be understood that for the communication method between UEs, reference can be made to the above description, which will not be described in detail here.

It should be understood that FIG. 1 exemplarily shows one base station and six UEs, as well as communication links between each communication device. Optionally, the communication system may include multiple base stations, and the coverage of each base station may include other numbers of UEs, such as more or less UEs, etc., which is not limited in this application.

Each of the above communication devices, such as the base station and UE1 to UE6 in Figure 1, can be configured with multiple antennas. The multiple antennas may include at least one transmitting antenna for transmitting signals and at least one receiving antenna for receiving signals. The embodiments of the present application do not limit the specific structure of each communication device. Optionally, the communication system may also include other network entities such as a network controller and a mobility management entity, and the embodiments of the present application are not limited thereto.

It can be understood that the method provided by this application can be applied not only to the communication system shown in Figure 1, but also to the communication system shown in Figure 2.

Please refer to Figure 2, which is a schematic diagram of a positioning architecture based on wireless communication provided by an embodiment of the present application.

As shown in Figure 2, the positioning architecture mainly includes: radio access network (RAN) (Figure 1 takes next generation RAN (NG-RAN) as an example), UE and core Net three parts.

The introduction of wireless access network, UE and core network are as follows:

Exemplarily, the core network includes location management function (LMF), access and mobility management function (AMF), service location protocol (service location protocol, SLP) and evolved service mobile location Center (evolved serving mobile location centre, E-SMLC).

For example, the LMF is responsible for supporting different types of location services related to the UE, including positioning the UE and delivering assistance data to the UE. For example, the LMF and the base station interact through new radio (NR) positioning protocol annex (NRRPa) messages to obtain positioning reference signals (PRS) and sounding reference signals (PRS). reference signal, SRS) configuration information, cell timing, cell location information, etc. For another example, LMF and UE transmit UE capability information, auxiliary information, measurement information, etc. through Long Term Evolution (LTE) Positioning Protocol (LPP) messages.

For example, the AMF can receive a location service request related to the UE from the 5th generation core network location services (5GC LCS) entity; or, the AMF itself can also initiate some location services on behalf of the UE and provide Location service requests are sent to LMF. After obtaining the location information of the UE, the AMF returns the location information of the UE to the 5GC LCS entity.

Exemplarily, the RAN includes a base station. As shown in Figure 2, gNB and ng-eNB can be connected through the Xn interface (or Xn-C interface), and LMF and ng-eNB/gNB can be connected through the NG-C interface. , and the UE and gNB can be connected through the NR-Uu interface, and the UE and ng-eNB can be connected through the LTE-Uu interface. It can be understood that this application does not limit each interface shown in Figure 2. For descriptions of each interface, you can also refer to relevant standards or protocols.

It can be understood that the schematic diagram of the positioning architecture shown in Figure 2 is only an example. For other forms of schematic diagrams of the positioning architecture, please refer to relevant standards or protocols, etc., which will not be described in detail here.

The various embodiments shown below may be applicable to the communication system shown in FIG. 1 or the communication system shown in FIG. 2, which will not be described again below.

Before introducing the method of this application in detail, some concepts involved in this application will be briefly introduced.

Please refer to Figure 3. Figure 3 is a schematic diagram of terminal device state switching provided by an embodiment of the present application.

As shown in Figure 3, it is the radio resource control (RRC) state and the transition process between states. New radio (new radio, NR) introduces a new RRC state, namely RRC_INACTIVE (radio resource control-inactive state), which is different from RRC_CONNECTED (radio resource control-connected state) and RRC_IDLE (radio resource control-idle state) The conversion relationship is shown in Figure 3.

RRC_INACTIVE (radio resource control - inactive state) can only be changed from RRC_CONNECTED (radio resource control - connected state) through the RRC release message. When the UE is released from the RRC_CONNECTED state to RRC_INACTIVE, the base station will assign the UE an identity I- RNTI (Inactive Radio Network Temporary Identifier), and uses this identifier to store the context of the UE. This base station is also called the UE's last serving gNB (last serving gNB), and is sometimes also recorded as the anchor gNB (anchor gNB).

When the UE requests to resume a previously suspended RRC connection or update the radio notification area (RNA), the UE sends a RRCResumeRequest message to the current serving base station. The RRCResumeRequest message structure includes a recovery reason value, which is used to indicate The RRCResumeRequest message requests the recovery reason. The RRCResumeRequest message structure also includes the I_RNTI identifier. The current serving base station goes to the last serving gNB to retrieve the UE context according to the I_RNTI identifier.

The specific process may be referred to Figure 4. Figure 4 is a schematic diagram of the RRC connection recovery process of a terminal device provided by an embodiment of the present application. Each step in Figure 4 is explained below:

S401: The UE sends an RRC connection recovery request RRCResumeRequst to the gNB. The RRCResumeRequst contains the I-RNTI allocated to the UE by the last serving gNB.

S402: When gNB receives RRCResumeRequst, and based on the gNB identity contained in I-RNTI, it can find the last serving gNB and request it to provide the context of the UE.

Specifically, gNB sends a context acquisition request Retrieve UE context request message to the corresponding last serving gNB.

S403: last serving gNB provides the context of the UE to gNB.

Specifically, the last serving gNB sends a context retrieval response Retrieve UE context response message to gNB, and the context retrieval response message includes the context of the UE.

S404/S405: gNB and UE complete the restoration of RRC connection, and can send user data after obtaining the authorization grant.

S406: If the downlink (DL) user data cached in the last serving gNB is required to be lossless, the gNB needs to provide a forwarding address.

S407/S408: gNB performs path conversion.

S409: The gNB triggers resource release of the UE at the last serving gNB.

It should be pointed out that when the UE context cannot be retrieved, gNB can send an RRCSetup message to the UE to re-establish the RRC connection; or gNB can directly send an RRCReject message to the UE to reject the UE's establishment request.

Please refer to Figure 5, which is a schematic flow chart of a communication method provided by an embodiment of the present application.

As shown in Figure 5, the method includes:

S501: The serving base station determines the configuration of uplink SRS resources (determines UL SRS resources).

It can be understood that in the methods shown in Figures 5 and 6, the serving base station may be a gNB, or a TRP, etc., which is not limited in the embodiments of the present application.

S502: The serving base station sends a message carrying SRS configuration (SRS configuration) to the UE. Correspondingly, the UE receives the SRS configuration. The SRS configuration includes configuration information of uplink SRS resources determined by the serving base station for the UE.

Through the method shown in Figure 5, the serving base station can send the SRS configuration to the UE, so that the UE can obtain the SRS configuration and send SRS according to the SRS configuration.

Please refer to FIG. 6 , which is a schematic flowchart of a positioning-based communication method provided by an embodiment of the present application.

As shown in Figure 6, the method includes:

S601: The LMF requests the SRS configuration from the UE's serving base station, such as requesting the SRS configuration through the NRPPa positioning information request message (NRPPa positioning information request).

S602: The serving base station determines the configuration of uplink SRS resources (determines UL SRS resources).

S603: The serving base station sends a message carrying SRS configuration (SRS configuration) to the UE. Correspondingly, the UE receives the SRS configuration.

In this embodiment of the present application, the above SRS configuration includes the configuration of uplink SRS resources.

S604: The serving base station sends a response carrying the SRS configuration to the LMF, such as replying the SRS configuration to the LMF through an NRPPa positioning information response (NRPPa positioning information response) message. Accordingly, LMF receives the response.

Optionally, the serving base station may also first send a message carrying the SRS configuration to the UE, and then after the LMF requests the SRS configuration from the serving base station of the UE, the serving base station sends a response carrying the SRS configuration to the LMF. It can be understood that the SRS configuration sent by the serving base station to the UE and the SRS configuration sent by the serving base station to the LMF may be the same, or different, and this is not limited in the embodiments of the present application. Optionally, the serving base station may also first send a message carrying SRS configuration 1 to the UE, and after the LMF requests the SRS configuration from the serving base station of the UE, determine to configure the uplink SRS resources, and then send a message carrying SRS configuration 2 to the UE, and Send a response carrying SRS configuration 2 to the LMF. It can be understood that SRS configuration 2 and SRS configuration 1 may be different, or they may be the same, which is not limited in the embodiment of this application. The embodiment of the present application does not limit the order of step 601 and step 602. The embodiment of the present application does not limit the order of step 603 and step 604.

S605: If the SRS is configured as aperiodic or semi-persistent SRS, the LMF requests the UE's serving base station to activate the SRS configuration, such as requesting the activation of the SRS configuration through the NRPPa positioning activation request (NRPPa positioning activation request) message. Correspondingly, the serving base station receives the NRPPa positioning activation request.

S606: The serving base station sends an instruction to activate SRS transmission to the UE (activate UE SRS transmission). Correspondingly, the UE receives the instruction.

It can be understood that although FIG. 6 does not show the step of the UE sending the SRS, the method shown in FIG. 6 may also include the step of the UE sending the SRS. As for when the UE sends the SRS, this embodiment of the application does not limit it.

S607: The serving base station sends a response to activate the SRS configuration to the LMF, such as sending a response to activating the SRS configuration to the LMF through an NRPPa positioning activation response (NRPPa positioning activation response) message. Accordingly, LMF receives the response.

It can be understood that the response to activate the SRS configuration shown above may be a high-layer response message.

S608: The LMF sends a measurement request to one or more base stations (which may or may not include a serving base station), requesting one or more base stations to measure the SRS. For example, the LMF sends an NRPPa measurement request message to one or more base stations to request measurement of the SRS. It can be understood that the one or more base stations shown above may include serving base stations and/or neighboring base stations.

S609: The serving base station and/or neighboring base stations perform uplink (UL) SRS measurement. Correspondingly, the base station that receives the measurement request performs UL SRS measurement.

S610: The serving base station and/or neighboring base station sends an NRPPa measurement response (NRPPa measurement response) to the LMF.

S611: The LMF sends a request to the serving base station to activate the SRS configuration, such as requesting to activate the SRS configuration through the NRPPa positioning deactivation (NRPPa positioning deactivation) message.

It can be understood that the communication method shown in Figure 6 includes the step of activating aperiodic or semi-persistent SRS transmission. When aperiodic or semi-persistent SRS transmission does not need to be activated (for example, periodic SRS positioning is used), the method provided by the embodiment of the present application may not include steps 605 to 607.

Optionally, when performing uplink positioning for a UE in RRC_INACTIVE, before the above step 601, the UE also needs to send an event report (event report) to the serving base station through small data transmission (SDT), and the serving base station receives the event The report is then forwarded to the LMF, and the LMF then requests the SRS configuration from the UE's serving base station to perform uplink positioning of the UE.

In the above method for uplink positioning of a UE in RRC_INACTIVE, the serving base station needs to deliver the configured SRS configuration to the UE through dedicated signaling, so that the UE sends SRS according to the received SRS configuration, thereby achieving the UE's positioning by measuring SRS. Upward positioning. In this way, the signaling overhead required for the serving base station to deliver the SRS configuration is proportional to the number of UEs that need to be positioned. The signaling overhead is large, and the SRS configuration needs to be delivered to the UE for each positioning, and the positioning efficiency is low. Moreover, the UE needs to send an event report to the serving base station through SDT, so that the serving base station delivers the configured SRS configuration to the UE through proprietary signaling. This requires the UE to support SDT capabilities, which increases the complexity of the UE.

In view of the technical problems of high signaling overhead and low positioning efficiency in the above positioning method, embodiments of this application propose a new positioning method. The terminal device sends the required SRS configuration to the first network device through a positioning request, so as to Requesting to reserve the first SRS resource corresponding to the first SRS configuration can save the signaling overhead required to deliver the SRS configuration. Moreover, there is no need for the first network device to deliver the SRS configuration to the terminal device every time positioning is performed, which improves positioning. Efficiency, the terminal device no longer needs to send event reports to the first network device through SDT, thereby eliminating the need for the terminal device to support SDT capabilities, reducing the complexity of the terminal device, simplifying the positioning process, and improving positioning efficiency.

Please refer to FIG. 7 , which is a schematic flowchart of a positioning method provided by an embodiment of the present application. This positioning method is applied in the field of communication technology. The positioning method includes but is not limited to the following steps:

S701: The terminal device sends a first positioning request to the first network device. Correspondingly, the first network device receives the first positioning request sent by the terminal device.

Wherein, the first positioning request includes a first SRS configuration, and the first positioning request is used to request the first network device to reserve a first SRS resource corresponding to the first SRS configuration.

It can be understood that the terminal device in the embodiment of the present application is a device equipped with a processor that can be used to execute computer execution instructions. It can be a handheld terminal (such as a mobile phone, a tablet computer, etc.) or a vehicle-mounted terminal (such as an autonomous driving system). wireless terminal, etc.), specifically the terminal equipment in Figure 1 (including but not limited to any equipment among UE1 to UE6), used to perform the positioning method in the embodiment of the present application to reduce signaling overhead. , improve positioning efficiency. The first network device in the embodiment of the present application is a device equipped with a processor that can be used to execute computer execution instructions. It can be an access network device (such as a base station, a transmission point TRP, etc.), and specifically it can be the access network device in Figure 1 mentioned above. Network access equipment, used to perform the determination in the embodiment of this application bit method to reduce signaling overhead and improve positioning efficiency.

In a possible embodiment, before sending the first positioning request, the terminal device also needs to determine the first SRS configuration.

Optionally, the terminal device may obtain the corresponding relationship between the cell identifier and the SRS configuration by receiving broadcast messages, multicast messages, etc., which may be sent by the first network device. The terminal device then determines the first SRS configuration corresponding to the first cell according to the corresponding relationship between the cell identifier and the SRS configuration.

The first cell identity includes a cell identity that is in the same public land mobile network (PLMN) as the terminal device, and may be a physical cell index (PCI). PCI is the cell identity carried in the reference signal sent by the base station in the cell. It can also be other cell identity, such as New Radio Cell Global Identifier (NCGI). Optionally, the terminal device can obtain the first cell identity by detecting that the neighboring cells are in the PCI list of the same PLMN.

For example, the corresponding relationship between the cell identifier and the SRS configuration may be: a one-to-one correspondence between the cell identifier and the SRS configuration; or, a cell identifier list corresponds to an SRS configuration list; or a cell corresponds to an SRS configuration list, etc., The embodiments of the present application do not limit this.

Optionally, the terminal device can also obtain the corresponding relationship between the cell identifier and the SRS configuration through offline downloading, etc., and then determine the first SRS configuration corresponding to the first cell based on the corresponding relationship between the cell identifier and the SRS configuration.

Optionally, the terminal device may also be pre-configured with a corresponding relationship between the cell identifier and the SRS configuration. The terminal device determines the first SRS configuration corresponding to the first cell based on the pre-configured corresponding relationship between the cell identifier and the SRS configuration.

It can be understood that the above only lists several exemplary ways of determining the first SRS configuration, and this should not limit the embodiments of the present application.

Through the embodiments of this application, the terminal device determines the corresponding SRS configuration according to the cell identifier. There is no need for the first network device to deliver the configured SRS configuration to the terminal device through dedicated signaling, which can save the signaling required to deliver the SRS configuration. Overhead, and there is no need to deliver SRS configuration to the terminal device every time it is positioned, which improves positioning efficiency.

In a possible embodiment, the first positioning request also includes a short medium access control integrity verification value (short medium access control integrity protection, shortMAC-I), an inactive radio network temporary identifier (inactive radio network temporary identifier) identifier, I-RNTI), and the above-mentioned first cell identifier.

Among them, shortMAC-I is used for authentication, and I-RNTI is used to identify the SRS configuration stored on the network side. The function of the first cell identifier is similar to the first SRS configuration, and is used to request reservation of the corresponding first SRS resource, thereby The first SRS may be sent according to the first SRS resource.

In a possible embodiment, the first positioning request may be sent to the first network device through a radio resource control RRC message, a medium access control control element (medium access control control element, MAC CE) or other messages. Among them, the RRC message may be a common control channel (common control channel, CCCH) message or a dedicated control channel (dedicated control channel, DCCH) message, etc.

Through the embodiment of this application, the first positioning request is sent to the first network device through an RRC message or MAC CE, etc., to request to reserve the first SRS resource corresponding to the first SRS configuration. There is no need to send the first positioning request to the first network device through SDT. Event report (event report) eliminates the need for terminal equipment to support SDT capabilities, reduces the complexity of terminal equipment, simplifies the positioning process, and improves positioning efficiency.

S702: The terminal device sends the first SRS to the first network device. Correspondingly, the first network device receives the first SRS sent by the terminal device.

Specifically, the terminal device sends the first SRS according to the first SRS resource corresponding to the first SRS configuration reserved by the first network device.

In a possible embodiment, after the terminal device sends the first positioning request to the first network device, after receiving the first In the case of a reply to the first positioning request sent by the network device, the first SRS is sent according to the first SRS resource corresponding to the first SRS configuration reserved by the first network device.

The first positioning request reply includes one or more of the first SRS resource, the first SRS configuration, and the first cell identifier, and is used to respond to the first positioning request, reserve the first SRS resource for the terminal device, and indicate The terminal device sends the first SRS according to the first SRS resource.

Through the embodiments of this application, there is no need for the first network device to deliver the configured SRS configuration to the terminal device through dedicated signaling, and to send the first positioning request reply to the terminal device. The terminal device can be instructed to follow the first SRS reserved for it. The resource sends the first SRS, which saves the signaling overhead required for delivering SRS configuration.

In a possible embodiment, the first positioning request reply further includes a first delay.

When the first network device is unable to satisfy the positioning request of the terminal device, the first delay value is used to instruct the terminal device to, after receiving the first delay time of the reply to the first positioning request, proceed according to the reservation for the first network device. The first SRS is sent from the first SRS resource.

Through the embodiments of the present application, when the first network device cannot satisfy the positioning request of the terminal device, the first delay can be used to avoid the problem that the terminal device may repeatedly initiate positioning requests multiple times, save signaling overhead, and simplify It simplifies the positioning process and improves positioning efficiency.

In a possible embodiment, the first positioning request reply can be sent through the second message Msg2 in the four-step process of random access to the first network device, the fourth message Msg4 in the four-step process of random access to the first network device, The second message MsgB and other messages in the two-step random access process of the first network device receive the first positioning request reply sent by the first network device.

In the embodiment of the present application, the first positioning request reply sent by the first network device is received through the random access message, and the first SRS is sent according to the first SRS resource reserved by the request, without the need for the first network device to send the first positioning request through dedicated signaling. The configured SRS configuration is delivered to the terminal device, which can save the signaling overhead required to deliver the SRS configuration.

Optionally, the first positioning request reply sent by the first network device can also be received through early data transmission (EDT), preconfigured grant (configured grant), preconfigured uplink resources (PUR), etc. , the embodiment of the present application does not limit this.

S703: The first network device measures the first SRS and obtains the positioning information of the terminal device.

In this embodiment of the present application, the terminal device sends the required SRS configuration to the first network device through a positioning request to request to reserve the first SRS resource corresponding to the first SRS configuration, which can save the information required for sending the SRS configuration. It reduces the overhead and eliminates the need to deliver SRS configuration to the terminal device every time it is positioned, which improves positioning efficiency. In addition, by sending the first positioning request, the terminal device requests to reserve the first SRS resource corresponding to the first SRS configuration. There is no need to send an event report (event report) to the first network device through SDT, and thus there is no need for the terminal device to support SDT capability reduces the complexity of terminal equipment, simplifies the positioning process, and improves positioning efficiency.

Please refer to FIG. 8 , which is a schematic flowchart of another positioning method provided by an embodiment of the present application. This positioning method is applied in the field of communication technology. The positioning method includes but is not limited to the following steps:

S800: The first network device sends a broadcast message, and accordingly, the terminal device receives the broadcast message.

The broadcast message includes the corresponding relationship between the cell identifier and the SRS configuration, and the terminal device obtains the corresponding relationship between the cell identifier and the SRS configuration by receiving the broadcast message.

It can be understood that this step 800 is an optional step. In addition to the implementation of step 800, the terminal device can also obtain the corresponding relationship between the cell identifier and the SRS configuration by receiving messages such as multicast messages. The terminal device can also obtain the corresponding relationship between the cell identifier and the SRS configuration through The corresponding relationship between the cell identifier and the SRS configuration can be obtained through offline downloading, pre-configuration, etc., and the embodiments of this application do not limit this.

It can be understood that the terminal device in the embodiment of the present application is a device equipped with a processor that can be used to execute computer execution instructions. It can be a handheld terminal (such as a mobile phone, a tablet computer, etc.) or a vehicle-mounted terminal (such as an autonomous driving system). wireless terminal, etc.), specifically the terminal equipment in Figure 1 (including but not limited to any equipment among UE1 to UE6), used to perform the positioning method in the embodiment of the present application to reduce signaling overhead. , improve positioning efficiency. The first network device in the embodiment of the present application is a device equipped with a processor that can be used to execute computer execution instructions. It can be an access network device (such as a base station, a transmission point TRP, etc.), and specifically it can be the access network device in Figure 1 mentioned above. The network access device is used to execute the positioning method in the embodiment of the present application to reduce signaling overhead and improve positioning efficiency.

S801: The terminal device determines the first SRS configuration.

The terminal device determines the first SRS configuration corresponding to the first cell identifier according to the corresponding relationship between the cell identifier and the SRS configuration.

The first cell identity includes a cell identity that is in the same PLMN as the terminal device, and may specifically be PCI. PCI is the cell identity carried in the reference signal sent by the base station in the cell, and can also be other cell identities, such as NCGI. Optionally, the terminal device can obtain the first cell identity by detecting that the neighboring cells are in the PCI list of the same PLMN.

S802: The terminal device sends a first positioning request to the first network device. Correspondingly, the first network device receives the first positioning request sent by the terminal device.

Wherein, the first positioning request includes a first SRS configuration, and the first positioning request is used to request the first network device to reserve a first SRS resource corresponding to the first SRS configuration.

Optionally, the first positioning request also includes shortMAC-I, I-RNTI, and the above-mentioned first cell identifier.

Among them, shortMAC-I is used for authentication, and I-RNTI is used to identify the SRS configuration stored on the network side. The function of the first cell identifier is similar to the first SRS configuration, and is used to request reservation of the corresponding first SRS resource, thereby The first SRS may be sent according to the first SRS resource.

Optionally, the first positioning request may be sent to the first network device through an RRC message, a MAC CE message, or other messages.

The RRC message may specifically be a CCCH message or a DCCH message.

S803: The first network device sends a second positioning request to the third network device. Correspondingly, the third network device receives the second positioning request sent by the first network device.

Wherein, the second positioning request is used to request positioning of the terminal device.

It can be understood that the third network device in the embodiment of the present application is a device equipped with a processor that can be used to execute computer execution instructions. It can be a core network device (such as a server, etc.). Specifically, it can be the AMF in Figure 2 above. Use In order to implement the positioning method in the embodiment of the present application, signaling overhead is reduced and positioning efficiency is improved.

Optionally, the second positioning request includes the next generation interface application protocol identifier (first identification information) between the terminal device and the third network device, and the next generation interface application protocol identifier (first identification information) between the terminal device and the first network device. identification information), and one or more pieces of information from the terminal equipment's location information, the terminal equipment's cell identification, the first cell identification, and the first SRS configuration.

Through the second positioning request in the embodiment of the present application, it is used to request positioning of the terminal device. There is no need for the terminal device to initiate a positioning request through SDT, so there is no need to require the terminal device to support SDT capabilities, which reduces the complexity of the terminal device, and The positioning process is simplified and positioning efficiency is improved.

Optionally, the second positioning request may be sent to the third network device through a Next Generation Interface Application Protocol NG-AP message.

Through the NG-AP message in the embodiment of the present application, the first network device is supported to trigger the second positioning request and request positioning of the terminal device.

S804: The third network device sends a third positioning request to the fourth network device. Correspondingly, the fourth network device receives the third positioning request sent by the third network device.

Wherein, the third positioning request includes the first SRS configuration, and the third positioning request is used to request reservation corresponding to the first SRS configuration. The first SRS resource, the first SRS configuration includes the SRS configuration corresponding to the first cell identity.

It can be understood that the fourth network device in the embodiment of the present application is a device equipped with a processor that can be used to execute computer execution instructions. It can be a core network device (such as a server, etc.), and specifically it can be the LMF in Figure 2 above. Use In order to implement the positioning method in the embodiment of the present application, signaling overhead is reduced and positioning efficiency is improved.

Optionally, the fourth network device sends a third positioning request reply to the third network device, where the third positioning request reply is used to indicate the first SRS resource.

Optionally, after receiving the third positioning request reply sent by the fourth network device, the third network device sends a second positioning request reply to the first network device, instructing the first network device to position the terminal device.

It can be understood that the second positioning request reply may be sent by the third network device to the first network device, or may be sent by the third network device to the fourth network device and forwarded to the first network device via the fourth network device. The application examples do not limit this.

S805: The fourth network device sends an uplink reference signal resource request to the first network device. Correspondingly, the first network device receives the uplink reference signal resource request sent by the fourth network device.

S806: The first network device sends an uplink reference signal resource request reply to the fourth network device. Correspondingly, the fourth network device receives the uplink reference signal resource request reply sent by the first network device.

S807: The first network device sends a first positioning request reply to the terminal device. Correspondingly, the terminal device receives the first positioning request reply sent by the first network device.

Wherein, the first positioning request reply indicates that the first network device satisfies the positioning request of the terminal device, so that the terminal device sends the first SRS according to the first SRS resource for measuring the first SRS to obtain the positioning information of the terminal device.

Optionally, the first positioning request reply includes one or more of the first SRS resource, the first SRS configuration, and the first cell identifier, and is used to reserve the first SRS resource for the terminal device in response to the first positioning request, And instruct the terminal device to send the first SRS according to the first SRS resource.

Through the embodiments of this application, there is no need for the first network device to deliver the configured SRS configuration to the terminal device through dedicated signaling, and to send the first positioning request reply to the terminal device. The terminal device can be instructed to follow the first SRS reserved for it. The resource sends the first SRS, which saves the signaling overhead required for delivering SRS configuration.

Optionally, the first positioning request reply also includes a first delay, which is used to instruct the terminal device to wait for the first time after receiving the first positioning request reply when the first network device cannot satisfy the positioning request of the terminal device. After the delay time, the first SRS is sent according to the first SRS resource reserved for it.

Through the embodiments of the present application, when the first network device cannot satisfy the positioning request of the terminal device, the first delay can be used to avoid the problem that the terminal device may repeatedly initiate positioning requests multiple times, save signaling overhead, and simplify It simplifies the positioning process and improves positioning efficiency.

Optionally, the first positioning request may be sent through the second message Msg2 in the process of four-step random access to the first network device, the fourth message Msg4 in the process of four-step random access to the first network device, the third message Msg4 in the process of two-step random access. The second message MsgB and other messages in a network device process are sent to the terminal device.

Through the embodiment of the present application, the first positioning request reply sent by the first network device is received through the random access message, and the first SRS is sent according to the first SRS resource reserved by the request, without the need for the first network device to send the first positioning request through dedicated signaling. The configured SRS configuration is delivered to the terminal device, which can save the signaling overhead required to deliver the SRS configuration.

S808a: The terminal device sends the first SRS.

The terminal device sends the first SRS according to the first SRS resource reserved for the terminal device, and the first SRS is used for positioning.

S808b: The first network device measures the first SRS.

S809: The fourth network device sends an uplink reference signal measurement request to the first network device. Correspondingly, the first network device The device receives an uplink reference signal measurement request sent by the fourth network device.

S810: The first network device sends an uplink reference signal measurement result report to the fourth network device. Correspondingly, the fourth network device receives the uplink reference signal measurement result report sent by the first network device.

It should be understood that the execution order of steps S808b, S809, and S810 is not limited in this embodiment of the present application.

It should be understood that step S802 in the embodiment of the present application is similar to step S701 in the above-mentioned Figure 7, step S808a in the embodiment of the present application is similar to step S702 in the above-mentioned Figure 7, and step S808b in the embodiment of the present application is similar to the step S701 in the above-mentioned figure. Step S703 in 7 is similar. Steps S800, S801, S803, S804, S805, S806, S807, S809, and S810 in the embodiment of the present application can be understood as modifications or supplements of the steps in Figure 7 above.

Please refer to FIG. 9 , which is a schematic flowchart of another positioning method provided by an embodiment of the present application. This positioning method is applied in the field of communication technology. The positioning method includes but is not limited to the following steps:

S900: Cell reselection occurs on the terminal device and is reselected from the second network device to the first network device.

S901: The first network device sends a broadcast message, and accordingly, the terminal device receives the broadcast message.

It is similar to the above step S800 and will not be described again here.

S902: The terminal device sends a first positioning request to the first network device. Correspondingly, the first network device receives the first positioning request sent by the terminal device.

It is similar to the above step S802 and will not be described again here.

S903: The first network device sends the first message to the second network device, and accordingly, the second network device receives the first message sent by the first network device.

After the terminal device satisfies the cell reselection condition, it reselects from the second network device to the first network device. After the first network device receives the first positioning request sent by the terminal device, the first network device sends the first positioning request to the second network device. The message is used to request context information of the terminal device and request the second network device to stop reserving SRS resources for the terminal device.

Through the embodiments of this application, when cell reselection occurs, the first network device sends a first message to the second network device, requesting to obtain the context information of the terminal device, which can ensure the continuity of positioning services in the case of cell reselection. and stability, requesting the second network device to stop reserving SRS resources for the terminal device, which can achieve effective utilization of resources and improve resource utilization.

It can be understood that the terminal device in the embodiment of the present application is a device equipped with a processor that can be used to execute computer execution instructions. It can be a handheld terminal (such as a mobile phone, a tablet computer, etc.) or a vehicle-mounted terminal (such as an autonomous driving system). wireless terminal, etc.), specifically the terminal equipment in Figure 1 (including but not limited to any equipment among UE1 to UE6), used to perform the positioning method in the embodiment of the present application to reduce signaling overhead. , improve positioning efficiency.

The first network device in the embodiment of the present application is a device equipped with a processor that can be used to execute computer execution instructions. It can be an access network device (such as a base station, a transmission point TRP, etc.), and specifically it can be the access network device in Figure 1 mentioned above. The network access device is used to execute the positioning method in the embodiment of the present application to reduce signaling overhead and improve positioning efficiency.

The second network device in the embodiment of the present application is a device equipped with a processor that can be used to execute computer execution instructions. It can be an access network device (such as a base station, a transmission point TRP, etc.), and specifically it can be the access network device in Figure 1 mentioned above. The network access device is used to execute the positioning method in the embodiment of the present application to reduce signaling overhead and improve positioning efficiency.

It can be understood that the first network device is the current serving network device (current serving base station), and the second network device is the old serving network device (old serving base station).

S904: The second network device sends the second message to the first network device, and accordingly, the first network device receives the second message sent by the second network device.

The second network device sends a second message to the first network device, where the second message includes context information of the terminal device.

Through the embodiment of the present application, when cell reselection occurs, the second network device sends a second message to the first network device after receiving the first message sent by the first network device. The second message includes the context of the terminal device. Information can ensure the continuity and stability of the positioning service in the case of cell reselection, and the second network device stops reserving SRS resources for the terminal device, which can achieve effective utilization of resources and improve resource utilization.

S905: The second network device sends the third message to the fourth network device, and accordingly, the fourth network device receives the third message sent by the second network device.

After the terminal device meets the cell reselection conditions, it is reselected from the second network device to the first network device, the second network device stops reserving SRS resources for the terminal device, and the second network device sends a third message to the fourth network device, Used to notify the fourth network device that the second network device has stopped reserving SRS resources for the terminal device.

It can be understood that the fourth network device in the embodiment of the present application is a device equipped with a processor that can be used to execute computer execution instructions. It can be a core network device (such as a server, etc.), and specifically it can be the LMF in Figure 2 above. Use In order to implement the positioning method in the embodiment of the present application, signaling overhead is reduced and positioning efficiency is improved.

S906: The fourth network device sends a fourth message to the second network device, and accordingly, the second network device receives the fourth message sent by the fourth network device.

The second network device receives the fourth message sent by the fourth network device and stops measuring the SRS sent by the terminal device.

Through the embodiments of this application, when cell reselection occurs, the second network device can promptly stop reserving SRS resources for the terminal device and stop measuring the SRS sent by the terminal device, which can achieve effective utilization of resources and improve resource utilization. .

S907: The first network device sends a second positioning request to the third network device. Correspondingly, the third network device receives the second positioning request sent by the first network device.

It is similar to the above step S803 and will not be described again here.

S908: The third network device sends a third positioning request to the fourth network device. Correspondingly, the fourth network device receives the third positioning request sent by the third network device.

It is similar to the above step S804 and will not be described again here.

S909: The fourth network device sends an uplink reference signal resource request to the first network device. Correspondingly, the first network device receives the uplink reference signal resource request sent by the fourth network device.

It is similar to the above step S805 and will not be described again here.

S910: The first network device sends an uplink reference signal resource request reply to the fourth network device. Correspondingly, the fourth network device receives the uplink reference signal resource request reply sent by the first network device.

It is similar to the above step S806 and will not be described again here.

S911: The first network device sends a first positioning request reply to the terminal device. Correspondingly, the terminal device receives the first positioning request reply sent by the first network device.

It is similar to the above step S807 and will not be described again here.

S912a: The terminal device sends the first SRS.

It is similar to the above step S808a and will not be described again here.

S912b: The first network device measures the first SRS.

It is similar to the above step S808b and will not be described again here.

S913: The fourth network device sends an uplink reference signal measurement request to the first network device. Correspondingly, the first network device receives the uplink reference signal measurement request sent by the fourth network device.

It is similar to the above step S809 and will not be described again here.

S914: The first network device sends an uplink reference signal measurement result report to the fourth network device. Correspondingly, the fourth network device The network device receives the uplink reference signal measurement result report sent by the first network device.

It is similar to the above step S810 and will not be described again here.

It should be understood that steps S903, S904, S905, and S906 in the embodiment of the present application can be understood as supplements or modifications of the steps in the above-mentioned Figure 7 or Figure 8. Other steps in the embodiment of the present application are the same as those in the above-mentioned Figure 7 or Figure 8. The steps in 8 are similar and their corresponding relationships have been explained, so they will not be repeated here.

The methods of the embodiments of the present application have been described in detail above. The following provides a device for implementing any method in the embodiment of the present application. For example, a device is provided that includes the steps performed by the equipment for implementing any of the above methods. unit (or means).

Please refer to FIG. 10 , which is a schematic structural diagram of a communication device provided by an embodiment of the present application.

As shown in FIG. 10 , the communication device 100 may include a transceiver unit 1001 and a processing unit 1002 . The transceiver unit 1001 and the processing unit 1002 may be software, hardware, or a combination of software and hardware.

Among them, the transceiver unit 1001 can implement a sending function and/or a receiving function, and the transceiver unit 1001 can also be described as a communication unit. The transceiver unit 1001 may also be a unit that integrates an acquisition unit and a sending unit, where the acquisition unit is used to implement the receiving function and the sending unit is used to implement the sending function. Optionally, the transceiver unit 1001 can be used to receive information sent by other devices, and can also be used to send information to other devices.

In a possible design, the communication device 100 may correspond to the terminal device in the method embodiment shown in FIGS. 7 to 9 . For example, the communication device 100 may be a terminal device or a chip in the terminal device. . The communication device 100 may include units for performing operations performed by the terminal device in the method embodiments shown in FIGS. 7 to 9 , and each unit in the communication device 100 is to implement the above FIGS. 7 to 9 respectively. Operations performed by the terminal device in the method embodiment shown in 9. Among them, the descriptions of each unit are as follows:

Transceiver unit 1001, configured to send a first positioning request to a first network device, where the first positioning request includes a first sounding reference signal SRS configuration, and the first positioning request is used to request reservation of the first SRS configuration corresponding The first SRS resource;

The processing unit 1002 is configured to configure the first SRS resource corresponding to the first SRS and send the first SRS through the transceiver unit 1001, where the first SRS is used for positioning.

In a possible implementation, the transceiver unit 1001 is also used to obtain the corresponding relationship between the cell identifier and the SRS configuration;

The processing unit 1002 is further configured to determine the first SRS configuration according to the first cell identifier and the corresponding relationship, where the first SRS configuration includes the SRS configuration corresponding to the first cell identifier.

In a possible implementation, the first cell identity includes a cell identity in the same public land mobile network as the communication device.

In a possible implementation, the first positioning request further includes a short medium access control integrity verification value shortMAC-I, an inactive wireless network temporary identity I-RNTI, and the first cell identity.

In a possible implementation, the first positioning request is carried in any one of the following messages: a radio resource control RRC message or a media access control layer control element MAC CE.

In a possible implementation, the processing unit 1002 is further configured to, upon receiving a first positioning request reply sent by the first network device, use the transceiver unit 1001 according to the first SRS resource. The first SRS is sent, and the first positioning request reply is used to instruct the communication device to send the first SRS.

In a possible implementation, the first positioning request reply includes one or more of the following: the first SRS resource, the first SRS configuration, and the first cell identity.

In a possible implementation, the first positioning request reply further includes a first delay, and the first delay is used to instruct the communication device to receive the first positioning request reply and send the first positioning request reply. The time interval between SRS.

In a possible implementation, the first positioning request reply is carried in any one of the following messages: the second message Msg2, the second message Msg2 in the process of the communication device randomly accessing the first network device through four steps. The communication device uses the fourth message Msg4 in the process of randomly accessing the first network device through four steps, and the communication device uses the second message MsgB in the process of randomly accessing the first network device in two steps.

In another possible design, the communication device 100 may correspond to the first network device in the method embodiment shown in FIGS. 7 to 9 . For example, the communication device 100 may be the first network device or the first network device. Chips in the first network equipment. The communication device 100 may include units for performing operations performed by the first network device in the method embodiments shown in FIGS. 7 to 9 , and each unit in the communication device 100 is configured to implement the above FIG. 7 to the operations performed by the first network device in the method embodiment shown in FIG. 9 . Among them, the descriptions of each unit are as follows:

The transceiver unit 1001 is configured to receive a first positioning request sent by a terminal device, where the first positioning request includes a first sounding reference signal SRS configuration, and the first positioning request is used to request to reserve a location corresponding to the first SRS configuration. First SRS resources;

The processing unit 1002 is configured to measure the first SRS sent by the terminal device according to the first SRS resource corresponding to the first SRS configuration, and obtain positioning measurement information of the terminal device.

In a possible implementation, the transceiver unit 1001 is further configured to send a correspondence between a cell identifier and an SRS configuration to the terminal device, where the correspondence is used to determine the first SRS configuration, and the third An SRS configuration includes an SRS configuration corresponding to the first cell identifier.

In a possible implementation, the first cell identity includes a cell identity in the same public land mobile network as the terminal device.

In a possible implementation, the first positioning request further includes a short medium access control integrity verification value shortMAC-I, an inactive wireless network temporary identity I-RNTI, and the first cell identity.

In a possible implementation, the first positioning request is carried in any one of the following messages: a radio resource control RRC message or a media access control layer control element MAC CE.

In a possible implementation, the transceiver unit 1001 is further configured to send a first positioning request reply to the terminal device, where the first positioning request reply is used to instruct the terminal device to send the first SRS. .

In a possible implementation, the first positioning request reply includes one or more of the following: the first SRS resource, the first SRS configuration, and the first cell identity.

In a possible implementation, the first positioning request reply further includes a first delay, and the first delay is used to instruct the terminal device to receive the first positioning request reply and send the first positioning request reply. The time interval between SRS.

In a possible implementation, the first positioning request reply is carried in any one of the following messages: the second message Msg2 in the process of the terminal device randomly accessing the communication device through four steps; The fourth message Msg4 in the process of the device randomly accessing the communication device through four steps, and the second message MsgB in the process of the terminal device randomly accessing the communication device in two steps.

In a possible implementation, the transceiver unit 1001 is further configured to send a first message to a second network device, where the first message is used to request context information of the terminal device and to request the second network device. The network device stops reserving SRS resources for the terminal device.

In a possible implementation, the transceiver unit 1001 is further configured to send a second positioning request to a third network device, where the second positioning request is used to request positioning of the terminal device.

In a possible implementation, the second positioning request includes first identification information, second identification information, and One or more of the following: the location information of the terminal device, the cell identity of the terminal device, the first cell identity, and the first SRS configuration;

Wherein, the first identification information includes the next generation interface application protocol identification between the terminal equipment and the third network equipment, and the second identification information includes the next generation interface application protocol identification between the terminal equipment and the communication device. Generation interface application protocol identifier.

In a possible implementation, the second positioning request is carried in a Next Generation Interface Application Protocol NG-AP message.

In a possible implementation, the transceiver unit 1001 is further configured to receive a second positioning request reply from the third network device, where the second positioning request reply is used to indicate positioning of the terminal device. .

In another possible design, the communication device 100 may correspond to the second network device in the method embodiment shown in FIG. 9 , for example, the communication device 100 may be a second network device or a second network device. The chip in the device. The communication device 100 may include units for performing operations performed by the second network device in the method embodiment shown in FIG. 9 , and each unit in the communication device 100 is configured to implement the operations shown in FIG. 9 . Operations performed by the second network device in the method embodiment. Among them, the descriptions of each unit are as follows:

Transceiver unit 1001, configured to receive a first message sent by a first network device, where the first message is used to request context information of a terminal device and request the communication device to stop reserving SRS resources for the terminal device;

The transceiver unit 1001 is also configured to send a second message to the first network device, where the second message includes context information of the terminal device.

In a possible implementation, the transceiver unit 1001 is further configured to send a third message to a fourth network device, where the third message is used to instruct to stop reserving SRS resources for the terminal device;

The transceiver unit 1001 is further configured to receive a fourth message sent by the fourth network device, where the fourth message is used to instruct to stop measuring the SRS sent by the terminal device.

In another possible design, the communication device 100 may correspond to the third network device in the method embodiment shown in FIGS. 8 to 9 . For example, the communication device 100 may be a third network device, or it may be a third network device. Chips in third network equipment. The communication device 100 may include units for performing operations performed by the third network device in the method embodiments shown in FIGS. 8 to 9 , and each unit in the communication device 100 is configured to implement the above FIG. 8 to the operations performed by the third network device in the method embodiment shown in FIG. 9 . Among them, the descriptions of each unit are as follows:

The transceiver unit 1001 is configured to receive a second positioning request sent by the first network device, where the second positioning request is used to request positioning of the terminal device;

The transceiver unit 1001 is configured to send a third positioning request to a fourth network device, where the third positioning request includes a first sounding reference signal SRS configuration, and the third positioning request is used to request reservation of the first SRS. Configure a corresponding first SRS resource, where the first SRS configuration includes an SRS configuration corresponding to the first cell identity.

In a possible implementation, the second positioning request includes first identification information, second identification information, and one or more of the following: location information of the terminal device, cell identification of the terminal device, the first cell identifier and the first SRS configuration;

Wherein, the first identification information includes the next generation interface application protocol identification between the terminal equipment and the communication device, and the second identification information includes the next generation interface application protocol identification between the terminal equipment and the first network equipment. Generation interface application protocol identifier.

In a possible implementation, the second positioning request is carried in a Next Generation Interface Application Protocol NG-AP message.

In a possible implementation, the transceiver unit 1001 is further configured to send a second positioning request reply to the first network device, where the second positioning request reply is used to indicate positioning of the terminal device.

In another possible design, the communication device 100 may correspond to the method embodiment shown in FIGS. 8 to 9 above. The fourth network device, such as the communication device 100, may be a fourth network device or a chip in the fourth network device. The communication device 100 may include units for performing operations performed by the fourth network device in the method embodiments shown in FIGS. 8 to 9 , and each unit in the communication device 100 is configured to implement the above FIG. 8 To the operations performed by the fourth network device in the method embodiment shown in FIG. 9 . Among them, the descriptions of each unit are as follows:

Transceiver unit 1001, configured to receive a third positioning request sent by a third network device, where the third positioning request includes a first sounding reference signal SRS configuration, and the third positioning request is used to request reservation of the first SRS configuration. The corresponding first SRS resource, the first SRS configuration includes the SRS configuration corresponding to the first cell identity;

The transceiver unit 1001 is further configured to send a third positioning request reply to the third network device, where the third positioning request reply is used to indicate the first SRS resource.

In a possible implementation, the transceiver unit 1001 is also configured to receive a third message sent by the second network device, where the third message is used to instruct to stop reserving SRS resources for the terminal device;

The transceiver unit 1001 is further configured to send a fourth message to the second network device, where the fourth message is used to instruct to stop measuring the SRS sent by the terminal device.

According to the embodiment of the present application, each unit in the device shown in Figure 10 can be separately or entirely combined into one or several additional units, or one (some) of the units can be further split into functionally more advanced units. It is composed of multiple small units, which can achieve the same operation without affecting the realization of the technical effects of the embodiments of the present application. The above units are divided based on logical functions. In practical applications, the function of one unit can also be realized by multiple units, or the functions of multiple units can be realized by one unit. In other embodiments of the present application, the electronic device may also include other units. In practical applications, these functions may also be implemented with the assistance of other units, and may be implemented by multiple units in cooperation.

It should be noted that the implementation of each unit may also refer to the corresponding descriptions of the method embodiments shown in FIG. 7, FIG. 8, and FIG. 9.

In the communication device 100 described in Figure 10, the terminal device sends the required SRS configuration to the first network device through the positioning request to request to reserve the first SRS resource corresponding to the first SRS configuration, which can save the need to send the SRS configuration. Required signaling overhead, and there is no need for the first network device to deliver SRS configuration to the terminal device every time it is positioned, which improves positioning efficiency. The terminal device no longer needs to send event reports to the first network device through SDT, thereby eliminating the need for Terminal equipment is required to support SDT capabilities, which reduces the complexity of the terminal equipment, simplifies the positioning process, and improves positioning efficiency.

Please refer to FIG. 11 , which is a schematic structural diagram of a communication device provided by an embodiment of the present application.

It should be understood that the communication device 110 shown in FIG. 11 is only an example. The communication device in the embodiment of the present application may also include other components, or components with similar functions to the components in FIG. 11 , or is not intended to include the components in FIG. 11 All parts.

The communication device 110 includes a communication interface 1101 and at least one processor 1102 .

The communication device 110 may correspond to any network element or device among terminal equipment, first network equipment, second network equipment, third network equipment, and fourth network equipment. The communication interface 1101 is used to send and receive signals, and at least one processor 1102 executes program instructions, so that the communication device 110 implements the corresponding process of the method executed by the corresponding device in the above method embodiment.

In a possible design, the communication device 110 may correspond to the terminal device in the method embodiment shown in FIGS. 7 to 9 , for example, the communication device 110 may be a terminal device or a chip in the terminal device. . The communication device 110 may include components for performing operations performed by the terminal device in the above method embodiment, and each component in the communication device 110 is respectively intended to implement the operations performed by the terminal device in the above method embodiment. The details can be as follows:

The terminal device sends a first positioning request to the first network device. The first positioning request includes a first sounding reference signal SRS configuration. The first positioning request is used to request to reserve a first SRS corresponding to the first SRS configuration. resource;

The terminal device sends the first SRS according to the first SRS resource corresponding to the first SRS configuration, and the first SRS used for positioning.

In a possible implementation, the method further includes:

The terminal device obtains the corresponding relationship between the cell identifier and the SRS configuration;

The terminal device determines the first SRS configuration according to the first cell identifier and the corresponding relationship, and the first SRS configuration includes the SRS configuration corresponding to the first cell identifier.

In a possible implementation, the first cell identity includes a cell identity in the same public land mobile network as the terminal device.

In a possible implementation, the first positioning request further includes a short medium access control integrity verification value shortMAC-I, an inactive wireless network temporary identity I-RNTI, and the first cell identity.

In a possible implementation, the first positioning request is carried in any one of the following messages: a radio resource control RRC message or a media access control layer control element MAC CE.

In a possible implementation, sending the first SRS according to the first SRS resource corresponding to the first SRS configuration includes:

When the terminal device receives the first positioning request reply sent by the first network device, it sends the first SRS according to the first SRS resource, and the first positioning request reply is used to indicate to the terminal device Send the first SRS.

In a possible implementation, the first positioning request reply includes one or more of the following: the first SRS resource, the first SRS configuration, and the first cell identity.

In a possible implementation, the first positioning request reply further includes a first delay, and the first delay is used to instruct the terminal device to receive the first positioning request reply and send the first positioning request reply. The time interval between SRS.

In a possible implementation, the first positioning request reply is carried in any one of the following messages: the second message Msg2, the second message Msg2 in the process of the terminal device randomly accessing the first network device through four steps. The fourth message Msg4 in the process of the terminal device randomly accessing the first network device in four steps, and the second message MsgB in the process of the terminal device randomly accessing the first network device in two steps.

In another possible design, the communication device 110 may correspond to the first network device in the method embodiment shown in FIGS. 7 to 9 . For example, the communication device 110 may be the first network device or the first network device. Chips in the first network equipment. The communication device 110 may include components for performing the operations performed by the first network device in the above method embodiment, and each component in the communication device 110 is respectively used to implement the operations performed by the first network device in the above method embodiment. The operation performed. The details can be as follows:

The first network device receives a first positioning request sent by the terminal device. The first positioning request includes a first sounding reference signal SRS configuration. The first positioning request is used to request to reserve the first positioning request corresponding to the first SRS configuration. SRS resources;

The first network device measures the first SRS sent by the terminal device according to the first SRS resource corresponding to the first SRS configuration to obtain positioning measurement information of the terminal device.

In a possible implementation, the method further includes:

The first network device sends a corresponding relationship between a cell identifier and an SRS configuration to the terminal device. The corresponding relationship is used to determine the first SRS configuration. The first SRS configuration includes an SRS configuration corresponding to the first cell identifier. .

In a possible implementation, the first cell identity includes a cell identity in the same public land mobile network as the terminal device.

In a possible implementation, the first positioning request further includes a short medium access control integrity verification value shortMAC-I, an inactive wireless network temporary identity I-RNTI, and the first cell identity.

In a possible implementation, the first positioning request is carried in any one of the following messages: Radio Resource Control Controls RRC messages and media access control layer control elements MAC CE.

In a possible implementation, before measuring the first SRS sent by the terminal device according to the first SRS resource corresponding to the first SRS configuration, the method further includes:

The first network device sends a first positioning request reply to the terminal device, where the first positioning request reply is used to instruct the terminal device to send the first SRS.

In a possible implementation, the first positioning request reply includes one or more of the following: the first SRS resource, the first SRS configuration, and the first cell identity.

In a possible implementation, the first positioning request reply further includes a first delay, and the first delay is used to instruct the terminal device to receive the first positioning request reply and send the first positioning request reply. The time interval between SRS.

In a possible implementation, the first positioning request reply is carried in any one of the following messages: the second message Msg2, the second message Msg2 in the process of the terminal device randomly accessing the first network device through four steps. The fourth message Msg4 in the process of the terminal device randomly accessing the first network device in four steps, and the second message MsgB in the process of the terminal device randomly accessing the first network device in two steps.

In a possible implementation, after receiving the first positioning request sent by the terminal device, the method further includes:

The first network device sends a first message to the second network device, the first message is used to request context information of the terminal device and request the second network device to stop reserving SRS resources for the terminal device. .

In a possible implementation, after receiving the first positioning request sent by the terminal device, the method further includes:

The first network device sends a second positioning request to the third network device, where the second positioning request is used to request positioning of the terminal device.

In a possible implementation, the second positioning request includes first identification information, second identification information, and one or more of the following: location information of the terminal device, cell identification of the terminal device, the first cell identifier and the first SRS configuration;

Wherein, the first identification information includes the next generation interface application protocol identification between the terminal device and the third network device, and the second identification information includes the next generation interface application protocol identification between the terminal device and the first network device. The next generation interface application protocol identifier.

In a possible implementation, the second positioning request is carried in a Next Generation Interface Application Protocol NG-AP message.

In a possible implementation, after sending the second positioning request to the third network device, the method further includes:

The first network device receives a second positioning request reply from the third network device, and the second positioning request reply is used to indicate positioning of the terminal device.

In another possible design, the communication device 110 may correspond to the second network device in the method embodiment shown in FIG. 9. For example, the communication device 110 may be a second network device or a second network device. The chip in the device. The communication device 110 may include components for performing the operations performed by the second network device in the above method embodiment, and each component in the communication device 110 is respectively used to implement the operations performed by the second network device in the above method embodiment. The operation performed. The details can be as follows:

The second network device receives the first message sent by the first network device, where the first message is used to request context information of the terminal device and request the second network device to stop reserving SRS resources for the terminal device;

The second network device sends a second message to the first network device, where the second message includes context information of the terminal device.

In a possible implementation, the method further includes:

The second network device sends a third message to the fourth network device, where the third message is used to instruct to stop reserving SRS resources for the terminal device;

The second network device receives a fourth message sent by the fourth network device, where the fourth message is used to instruct to stop measuring the SRS sent by the terminal device.

In another possible design, the communication device 110 may correspond to the third network device in the method embodiment shown in FIGS. 8 to 9 . For example, the communication device 110 may be a third network device, or may be a third network device. Chips in third network equipment. The communication device 110 may include components for performing the operations performed by the third network device in the above method embodiment, and each component in the communication device 110 is respectively used to implement the operations performed by the third network device in the above method embodiment. The operation performed. The details can be as follows:

The third network device receives the second positioning request sent by the first network device, where the second positioning request is used to request positioning of the terminal device;

The third network device sends a third positioning request to the fourth network device, the third positioning request includes a first sounding reference signal SRS configuration, and the third positioning request is used to request reservation of the first SRS configuration corresponding The first SRS resource, the first SRS configuration includes the SRS configuration corresponding to the first cell identity.

In a possible implementation, the second positioning request includes first identification information, second identification information, and one or more of the following: location information of the terminal device, cell identification of the terminal device, the first cell identifier and the first SRS configuration;

Wherein, the first identification information includes the next generation interface application protocol identification between the terminal device and the third network device, and the second identification information includes the next generation interface application protocol identification between the terminal device and the first network device. The next generation interface application protocol identifier.

In a possible implementation, the second positioning request is carried in a Next Generation Interface Application Protocol NG-AP message.

In a possible implementation, the method further includes:

The third device sends a second positioning request reply to the first network device, where the second positioning request reply is used to instruct the terminal device to be positioned.

In another possible design, the communication device 110 may correspond to the fourth network device in the method embodiment shown in FIGS. 8 to 9 . For example, the communication device 110 may be the fourth network device, or it may be Chips in fourth network equipment. The communication device 110 may include components for performing the operations performed by the fourth network device in the above method embodiment, and each component in the communication device 110 is respectively used to implement the operations performed by the fourth network device in the above method embodiment. The operation performed. The details can be as follows:

The fourth network device receives a third positioning request sent by the third network device, the third positioning request includes a first sounding reference signal SRS configuration, and the third positioning request is used to request to reserve the SRS configuration corresponding to the first SRS configuration. The first SRS resource, the first SRS configuration includes the SRS configuration corresponding to the first cell identity;

The fourth network device sends a third positioning request reply to the third network device, where the third positioning request reply is used to indicate the first SRS resource.

In a possible implementation, the method further includes:

The fourth network device receives a third message sent by the second network device, where the third message is used to instruct to stop reserving SRS resources for the terminal device;

The fourth network device sends a fourth message to the second network device, where the fourth message is used to instruct to stop measuring the SRS sent by the terminal device.

In the communication device 110 depicted in Figure 11, the terminal device sends the required SRS configuration to the first through a positioning request. A network device requests to reserve the first SRS resource corresponding to the first SRS configuration, which can save the signaling overhead required to deliver the SRS configuration, and does not require the first network device to deliver the SRS to the terminal device every time it is positioned. configuration, improves positioning efficiency, and the terminal device no longer needs to send event reports to the first network device through SDT, thereby eliminating the need for the terminal device to support SDT capabilities, reducing the complexity of the terminal device, simplifying the positioning process, and improving positioning efficiency.

For the case where the communication device may be a chip or a chip system, refer to the schematic structural diagram of the chip shown in FIG. 12 .

As shown in Figure 12, the chip 120 includes a processor 1201 and an interface 1202. The number of processors 1201 may be one or more, and the number of interfaces 1202 may be multiple. It should be noted that the corresponding functions of the processor 1201 and the interface 1202 can be realized through hardware design, software design, or a combination of software and hardware, which are not limited here.

Optionally, the chip 120 may also include a memory 1203, which is used to store necessary program instructions and data.

In this application, the processor 1201 may be used to call the communication method provided by one or more embodiments of this application from the memory 1203 on the terminal device, the first network device, the second network device, the third network device, and the fourth network device. Implement the program for one or more devices or network elements and execute the instructions contained in the program. The interface 1202 may be used to output execution results of the processor 1201. In this application, the interface 1202 may be specifically used to output various messages or information from the processor 1201.

Regarding the communication method provided by one or more embodiments of the present application, reference may be made to the respective embodiments shown in FIG. 7, FIG. 8, and FIG. 9, which will not be described again here.

The processor in the embodiment of the present application can be a central processing unit (Central Processing Unit, CPU). The processor can also be other general-purpose processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

The memory in the embodiment of the present application is used to provide storage space, and data such as operating systems and computer programs can be stored in the storage space. Memory includes but is not limited to random access memory (RAM), read-only memory (ROM), erasable programmable read only memory (EPROM), or portable Read-only memory (compact disc read-only memory, CD-ROM).

According to the method provided by the embodiment of the present application, the embodiment of the present application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the above-mentioned computer program is run on one or more processors, The methods shown in Figure 7, Figure 8, and Figure 9 above can be implemented.

According to the method provided by the embodiment of the present application, the embodiment of the present application also provides a computer program product. The above-mentioned computer program product includes a computer program. When the above-mentioned computer program is run on a processor, the above-mentioned Figures 7, 8 and 8 can be realized. The method shown in 9.

Embodiments of the present application also provide a system that includes at least one communication device 100 or communication device 110 or chip 120 as described above, for executing the steps performed by the corresponding device in any of the embodiments of FIG. 7, FIG. 8, and FIG. 9. step.

An embodiment of the present application also provides a processing device, including a processor and an interface; the processor is configured to execute the method in any of the above method embodiments.

It should be understood that the above processing device may be a chip. For example, the processing device may be a field programmable gate array (FPGA), a general processor, a digital signal processor (DSP), or an application specific integrated circuit (ASIC). , off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete The independent hardware component can also be a system on chip (SoC), a central processor unit (CPU), a network processor (NP), or digital signal processing. The circuit (digital signal processor, DSP) can also be a microcontroller unit (micro controller unit, MCU), a programmable logic device (PLD), or other integrated chips. Each method, step and logical block diagram disclosed in the embodiment of this application can be implemented or executed. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of illustration, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The usable media may be magnetic media (e.g., floppy disks, hard disks, tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks, SSD)) etc.

The units in each of the above device embodiments correspond completely to the electronic equipment in the method embodiments, and the corresponding modules or units perform corresponding steps. For example, the communication unit (transceiver) performs the steps of receiving or sending in the method embodiments, except for sending. , other steps besides receiving may be performed by the processing unit (processor). For the functions of specific units, please refer to the corresponding method embodiments. There can be one or more processors.

It can be understood that in the embodiments of the present application, the electronic device can perform some or all of the steps in the embodiments of the present application. These steps or operations are only examples. The embodiments of the present application can also perform other operations or variations of various operations. In addition, various steps may be performed in a different order than those presented in the embodiments of the present application, and may not be implemented in the embodiments of the present application. All operations in the example.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory ROM, random access memory RAM, magnetic disk or optical disk and other various media that can store program codes.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application.

Claims (29)

A positioning method, characterized by including: The terminal device sends a first positioning request to the first network device. The first positioning request includes a first sounding reference signal SRS configuration. The first positioning request is used to request to reserve a first SRS corresponding to the first SRS configuration. resource; The terminal device sends the first SRS according to the first SRS resource corresponding to the first SRS configuration, and the first SRS is used for positioning. The method of claim 1, further comprising: The terminal device obtains the corresponding relationship between the cell identifier and the SRS configuration; The terminal device determines the first SRS configuration according to the first cell identifier and the corresponding relationship, and the first SRS configuration includes the SRS configuration corresponding to the first cell identifier. The method according to claim 1 or 2, characterized in that the first positioning request also includes a short medium access control integrity verification value shortMAC-I, an inactive wireless network temporary identifier I-RNTI, and the Describe the first cell identity. The method according to any one of claims 1 to 3, characterized in that the first positioning request is carried in any one of the following messages: a radio resource control RRC message and a media access control layer control element MAC CE. The method according to any one of claims 1 to 4, wherein sending the first SRS according to the first SRS resource corresponding to the first SRS configuration includes: When the terminal device receives the first positioning request reply sent by the first network device, it sends the first SRS according to the first SRS resource, and the first positioning request reply is used to indicate to the terminal device Send the first SRS. The method of claim 5, wherein the first positioning request reply includes one or more of the following: the first SRS resource, the first SRS configuration, and the first cell identity. The method according to claim 5 or 6, characterized in that the first positioning request reply further includes a first delay, and the first delay is used to instruct the terminal device to receive the first positioning request reply. and the time interval between sending the first SRS. The method according to any one of claims 5 to 7, characterized in that the first positioning request reply is carried in any one of the following messages: the terminal device randomly accesses the first network in four steps The second message Msg2 in the device process, the fourth message Msg4 in the process of the terminal device randomly accessing the first network device in four steps, and the terminal device randomly accessing the first network device in two steps The second message in MsgB. A positioning method, characterized by including: The first network device receives a first positioning request sent by the terminal device. The first positioning request includes a first sounding reference signal SRS configuration. The first positioning request is used to request to reserve the first positioning request corresponding to the first SRS configuration. SRS resources; The first network device measures the data sent by the terminal device according to the first SRS resource corresponding to the first SRS configuration. The first SRS obtains the positioning measurement information of the terminal device. The method of claim 9, further comprising: The first network device sends a corresponding relationship between a cell identifier and an SRS configuration to the terminal device. The corresponding relationship is used to determine the first SRS configuration. The first SRS configuration includes an SRS configuration corresponding to the first cell identifier. . The method according to claim 9 or 10, characterized in that the first positioning request also includes a short medium access control integrity verification value shortMAC-I, an inactive wireless network temporary identifier I-RNTI, and the Describe the first cell identity. The method according to any one of claims 9 to 11, characterized in that the first positioning request is carried in any one of the following messages: a radio resource control RRC message and a media access control layer control element MAC CE. The method according to any one of claims 9 to 12, characterized in that before measuring the first SRS sent by the terminal device according to the first SRS resource corresponding to the first SRS configuration, the method further include: The first network device sends a first positioning request reply to the terminal device, where the first positioning request reply is used to instruct the terminal device to send the first SRS. The method according to claim 13, wherein the first positioning request reply includes one or more of the following: the first SRS resource, the first SRS configuration, and the first cell identity. The method according to claim 13 or 14, wherein the first positioning request reply further includes a first delay, and the first delay is used to instruct the terminal device to receive the first positioning request reply. and the time interval between sending the first SRS. The method according to any one of claims 13 to 15, characterized in that the first positioning request reply is carried in any one of the following messages: the terminal device randomly accesses the first network in four steps The second message Msg2 in the device process, the fourth message Msg4 in the process of the terminal device randomly accessing the first network device in four steps, and the terminal device randomly accessing the first network device in two steps The second message in MsgB. The method according to any one of claims 9 to 16, characterized in that after receiving the first positioning request sent by the terminal device, the method further includes: The first network device sends a first message to the second network device, the first message is used to request context information of the terminal device and request the second network device to stop reserving SRS resources for the terminal device. . The method according to any one of claims 9 to 17, characterized in that after receiving the first positioning request sent by the terminal device, the method further includes: The first network device sends a second positioning request to the third network device, where the second positioning request is used to request positioning of the terminal device. The method according to claim 18, characterized in that the second positioning request includes first identification information, second identification information, and one or more of the following: location information of the terminal equipment, cell identification of the terminal equipment, the first cell identification, and the first SRS configuration; Wherein, the first identification information includes the next generation interface application protocol identification between the terminal device and the third network device, and the second identification information includes the next generation interface application protocol identification between the terminal device and the first network device. The next generation interface application protocol identifier. The method according to claim 18 or 19, characterized in that the second positioning request is carried in a Next Generation Interface Application Protocol NG-AP message. The method according to any one of claims 18 to 20, characterized in that after sending the second positioning request to the third network device, the method further includes: The first network device receives a second positioning request reply from the third network device, and the second positioning request reply is used to indicate positioning of the terminal device. A positioning method, characterized by including: The second network device receives the first message sent by the first network device, where the first message is used to request context information of the terminal device and request the second network device to stop reserving SRS resources for the terminal device; The second network device sends a second message to the first network device, where the second message includes context information of the terminal device. The method of claim 22, further comprising: The second network device sends a third message to the fourth network device, where the third message is used to instruct to stop reserving SRS resources for the terminal device; The second network device receives a fourth message sent by the fourth network device, where the fourth message is used to instruct to stop measuring the SRS sent by the terminal device. A communication device, characterized by comprising a module or unit for executing the method described in any one of claims 1 to 8, 9 to 21, or 22 to 23. A communication device, characterized by including: a processor; When the processor calls the computer program or instructions in the memory, the method according to any one of claims 1 to 8 is executed, or the method according to any one of claims 9 to 21 is executed, Or the method according to any one of claims 22 to 23 is performed. A communication device, characterized by including: a logic circuit and a communication interface; The communication interface is used to receive information or send information; The logic circuit is used to receive information or send information through the communication interface, so that the method according to any one of claims 1 to 8 is executed, or the method according to any one of claims 9 to 21 is executed, or the method according to any one of claims 22 to 23 is executed. A computer-readable storage medium, characterized by including: The computer-readable storage medium is used to store instructions or computer programs; when the instructions or the computer program are executed, the method of any one of claims 1 to 8 is implemented, or claim 9 The method described in any one of claims 21 to 21 is implemented, or the method described in any one of claims 22 to 23 is implemented. A computer program product, characterized in that it includes: instructions or computer programs; When the instructions or the computer program are executed, the method as claimed in any one of claims 1 to 8 is implemented, or the method as claimed in any one of claims 9 to 21 is executed, or the method as claimed in claim 9 is executed. The method described in any one of 22 to 23 is performed. A communication system, characterized by comprising the communication device according to claim 24, or the communication device according to claim 25, or the communication device according to claim 26.